change unige color to $brandcolor for some missing cases + generalise no...

change unige color to $brandcolor for some missing cases + generalise no display for filter userlist depending on course type (week, topics...)

scss/style_post_scss.scss

@@ -368,7 +368,7 @@ body {
     .login-button:hover, .login-button:focus {
       color: white;
       text-decoration: none;
-      background-color: #ad1457;
+      background-color: $brand-primary;
     }
 
     .login-menu {
@@ -550,14 +550,14 @@ select + .btn-group, .btn-group + .btn  {
 // ----- Participants page
 // ---------------------------------------------------------------------------
 
-#page-course-view-topics {
+[id^="page-course-view-"] {
   .userlist .initialbar {
     display: none !important;
   }
 
   #enrolusersbutton-1 .btn {
-    color: #d80669;
-    border-color: #d80669;
+    color: $brand-primary;
+    border-color: $brand-primary;
     background-color: #fff;
     margin-top: 2.7em !important;
     transition: background-color 0.2s;
@@ -595,7 +595,7 @@ select + .btn-group, .btn-group + .btn  {
       display: block;
       height: 50px;
       color: #fff;
-      background-color: #d80669;
+      background-color: $brand-primary;
       padding-top: 0.55em;
       padding-left: 0.9em;
       padding-right: 0.9em;
@@ -987,7 +987,7 @@ select + .btn-group, .btn-group + .btn  {
 
   .scroll-top-button:hover {
     padding-top: 0.35em;
-    background-color: #ad1457;
+    background-color: $brand-primary;
   }
 
   .footer-container {