gluon-status-page: removed obsolete css prefixes (#877)

None of them are used by modern browsers anymore, so it's safe to remove them.

package/gluon-status-page/src/css/animation.css

@@ -2,84 +2,11 @@
    Animation example, for spinners
 */
 .animate-spin {
-  -moz-animation: spin 2s infinite linear;
-  -o-animation: spin 2s infinite linear;
-  -webkit-animation: spin 2s infinite linear;
-  animation: spin 2s infinite linear;
+  animation: spin 2s linear infinite;
   display: inline-block;
 }
-@-moz-keyframes spin {
-  0% {
-    -moz-transform: rotate(0deg);
-    -o-transform: rotate(0deg);
-    -webkit-transform: rotate(0deg);
-    transform: rotate(0deg);
-  }
-
-  100% {
-    -moz-transform: rotate(359deg);
-    -o-transform: rotate(359deg);
-    -webkit-transform: rotate(359deg);
-    transform: rotate(359deg);
-  }
-}
-@-webkit-keyframes spin {
-  0% {
-    -moz-transform: rotate(0deg);
-    -o-transform: rotate(0deg);
-    -webkit-transform: rotate(0deg);
-    transform: rotate(0deg);
-  }
-
-  100% {
-    -moz-transform: rotate(359deg);
-    -o-transform: rotate(359deg);
-    -webkit-transform: rotate(359deg);
-    transform: rotate(359deg);
-  }
-}
-@-o-keyframes spin {
-  0% {
-    -moz-transform: rotate(0deg);
-    -o-transform: rotate(0deg);
-    -webkit-transform: rotate(0deg);
-    transform: rotate(0deg);
-  }
-
-  100% {
-    -moz-transform: rotate(359deg);
-    -o-transform: rotate(359deg);
-    -webkit-transform: rotate(359deg);
-    transform: rotate(359deg);
-  }
-}
-@-ms-keyframes spin {
-  0% {
-    -moz-transform: rotate(0deg);
-    -o-transform: rotate(0deg);
-    -webkit-transform: rotate(0deg);
-    transform: rotate(0deg);
-  }
-
-  100% {
-    -moz-transform: rotate(359deg);
-    -o-transform: rotate(359deg);
-    -webkit-transform: rotate(359deg);
-    transform: rotate(359deg);
-  }
-}
 @keyframes spin {
-  0% {
-    -moz-transform: rotate(0deg);
-    -o-transform: rotate(0deg);
-    -webkit-transform: rotate(0deg);
-    transform: rotate(0deg);
-  }
-
   100% {
-    -moz-transform: rotate(359deg);
-    -o-transform: rotate(359deg);
-    -webkit-transform: rotate(359deg);
-    transform: rotate(359deg);
+    transform: rotate(360deg);
   }
 }

package/gluon-status-page/src/css/menu.css

@@ -21,20 +21,10 @@
   max-height: 80vh;
 
   transform-origin: top left;
-  -webkit-animation: new-menu-animation .08s ease-out forwards;
-  -moz-animation: new-menu-animation .08s ease-out forwards;
+  animation: new-menu-animation .08s ease-out forwards;
 }
 
-@-webkit-keyframes new-menu-animation {
-  from {
-    transform: scaleY(0);
-  }
-  to {
-    transform: scaleY(1);
-  }
-}
-
-@-moz-keyframes new-menu-animation {
+@keyframes new-menu-animation {
   from {
     transform: scaleY(0);
   }