added gpl v3 preamble required for moodle approval

dta/db/upgrade.php

 <?php
+// This file is part of Moodle - http://moodle.org/
+//
+// Moodle is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// Moodle is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with Moodle.  If not, see <http://www.gnu.org/licenses/>.
 
 /**
  * Upgrade code for install
@@ -17,17 +31,5 @@ defined('MOODLE_INTERNAL') || die();
 function xmldb_assignsubmission_dta_upgrade($oldversion) {
     global $CFG;
 
-    // Moodle v2.8.0 release upgrade line.
-    // Put any upgrade step following this.
-
-    // Moodle v2.9.0 release upgrade line.
-    // Put any upgrade step following this.
-
-    // Moodle v3.0.0 release upgrade line.
-    // Put any upgrade step following this.
-
-    // Moodle v3.1.0 release upgrade line.
-    // Put any upgrade step following this.
-
     return true;
 }

dta/lang/en/assignsubmission_dta.php

 <?php
+// This file is part of Moodle - http://moodle.org/
+//
+// Moodle is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// Moodle is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with Moodle.  If not, see <http://www.gnu.org/licenses/>.
 
 /**
  * Strings for component "assignsubmission_dta", language "en"

dta/lib.php

 <?php
+// This file is part of Moodle - http://moodle.org/
+//
+// Moodle is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// Moodle is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with Moodle.  If not, see <http://www.gnu.org/licenses/>.
 
 /**
  * This file contains the moodle hooks for the submission DTA plugin

dta/locallib.php

 <?php
+// This file is part of Moodle - http://moodle.org/
+//
+// Moodle is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// Moodle is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with Moodle.  If not, see <http://www.gnu.org/licenses/>.
 
 defined('MOODLE_INTERNAL') || die();
 

dta/models/DtaResult.php

 <?php
+// This file is part of Moodle - http://moodle.org/
+//
+// Moodle is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// Moodle is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with Moodle.  If not, see <http://www.gnu.org/licenses/>.
 
 class DtaResult {
 

dta/settings.php

 <?php
+// This file is part of Moodle - http://moodle.org/
+//
+// Moodle is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// Moodle is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with Moodle.  If not, see <http://www.gnu.org/licenses/>.
 
 /**
  * This file defines the admin settings for this plugin

dta/styles.css

 /* Prevent word breaking in the grading table */
-.dttSubmissionSummary {
+.dtaSubmissionSummary {
     white-space: nowrap;
 }
 
-.dttSubmissionSummary,
-.dttSubmissionDetails {
+.dtaSubmissionSummary,
+.dtaSubmissionDetails {
     margin-top: 15px;
 }
 
 /* empty div between summary and detail table */
-.dttSpacer {
+.dtaSpacer {
     margin-top: 30px;
 }
 
@@ -17,7 +17,7 @@
 * Layout for the Detail view
 ****************************************************************/
 
-.dttTable {
+.dtaTable {
     display: inline-block;
     max-width: 100%;
     overflow: auto;
@@ -27,48 +27,48 @@
     overflow-x: hidden;
 }
 
-.dttTableHeaderRow {
+.dtaTableHeaderRow {
     font-weight: bold;
     color: white !important;
     background-color: gray !important;
 }
 
-.dttTableRow {
+.dtaTableRow {
     background-color: unset !important;
     border-top: .05rem solid lightgray;
 }
 
-.dttTableHeaderRow th,
-.dttTableRow td {
+.dtaTableHeaderRow th,
+.dtaTableRow td {
     padding: .9375em 1.25em;
 }
 
-.dttStacktraceDetails {
+.dtaStacktraceDetails {
     max-height: 300px;
     max-width: 70%;
     overflow: auto;
 }
 
-.dttResultUnknown {
+.dtaResultUnknown {
     border-left: 10px solid gray;
 }
 
-.dttResultSuccess {
+.dtaResultSuccess {
     border-left: 10px solid green;
 }
 
-.dttResultFailure {
+.dtaResultFailure {
     border-left: 10px solid orange;
 }
 
-.dttResultCompilationError {
+.dtaResultCompilationError {
     border-left: 10px solid red;
 }
 
-.dttTableRow:hover {
+.dtaTableRow:hover {
     background-color: lightgray !important;
 }
 
-.dttTableSpacer {
+.dtaTableSpacer {
     border-bottom: 2px solid darkgray;
 }

dta/utils/backend.php

 <?php
+// This file is part of Moodle - http://moodle.org/
+//
+// Moodle is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// Moodle is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with Moodle.  If not, see <http://www.gnu.org/licenses/>.
 
 class DtaBackendUtils {
 

dta/utils/database.php

 <?php
+// This file is part of Moodle - http://moodle.org/
+//
+// Moodle is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// Moodle is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with Moodle.  If not, see <http://www.gnu.org/licenses/>.
 
 class DbUtils {
 

dta/utils/view.php

 <?php
+// This file is part of Moodle - http://moodle.org/
+//
+// Moodle is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// Moodle is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with Moodle.  If not, see <http://www.gnu.org/licenses/>.
 
 class ViewSubmissionUtils {
 

dta/version.php

 <?php
+// This file is part of Moodle - http://moodle.org/
+//
+// Moodle is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// Moodle is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with Moodle.  If not, see <http://www.gnu.org/licenses/>.
+
 /**
  * This file contains the version information for the onlinetext DTA plugin
  *