Merge branch 'prepare_production' into 'intermediate'

# Conflicts:
#   js/headfoot.js

css/styles.css

+.button-red{
+    background-color: #E0001B;
+}
+
+.button-margin{
+    margin: 20pt;
+}
\ No newline at end of file

js/headfoot.js

@@ -48,18 +48,6 @@ function head() {
     navheader.id = "header";
     navheader.classList.add("clear");
 
-    // disclaimer
-    let alertdiv = document.createElement("div");
-    alertdiv.classList.add("alert", "alert-danger", "alert-dismissible", "fade", "show");
-    alertdiv.style = "text-align:center;";
-    alertdiv.innerHTML="<strong>Disclaimer</strong> This website is under construction and in prototype-phase. It is not for public use."
-    let alertbutton = document.createElement("button");
-    alertbutton.type = "button";
-    alertbutton.classList.add("close");
-    alertbutton.setAttribute("data-dismiss", "alert");
-    alertbutton.innerHTML = "&times;";
-    prependChild(alertdiv, alertbutton);
-
     // navigation header
     let navbar = document.createElement("nav");
     navbar.classList.add("navbar", "navbar-expand-md", "navbar-light");
@@ -133,7 +121,6 @@ function head() {
     navbarcontainer.appendChild(navelements);
     navbar.appendChild(navbarcontainer)
 
-    navheader.appendChild(alertdiv);
     navheader.appendChild(navbar);
     prependChild(document.body, navheader);
 }