Courses admin: re-styling.

courses_legacy/static/scss/layout/_globals.scss

@@ -73,7 +73,7 @@ body {
 //## Set shared styles for all pages
 //##
 .page {
-    @include card(rgba($gray,0.5));
+    padding: 17px;
 }
 
 //## Minor layout adjusts on form controls styles

courses_legacy/static/scss/theme/_globals.scss

@@ -4,8 +4,6 @@
 //## Set shared styles for all pages
 //##
 .page {
-    @include card(rgba($light-blue,0.6));
-
     @media screen and (min-width: $screen-sm-min) {
         padding: 30px !important;
     }

courses_legacy/templates/administration/courses.html

@@ -104,10 +104,10 @@ wrapper-course-lesson
                         </div>
                     </div>
                     <div class="filter-keyword col-md-3 col-sm-4">
-                        <input type="text" ng-model="filters.textsearch" placeholder="Palavra-chave" class="form-control">
+                        <input type="text" ng-model="filters.textsearch" placeholder="Palavra-chave">
                     </div>
                     <div class="filter-ordering col-md-3 col-sm-4">
-                        <select ng-model="ordering" class="form-control">
+                        <select ng-model="ordering">
                             <option value="start_date">Data de início</option>
                             <option value="status">Status</option>
                             <option value="name">Nome</option>