Added new loading modal window. Phase 1.

Phase 2 will include metadata, currently it needs to be rewritten to allow it.
Also removed some redundant loading animations.

Change-Id: I1dce75460a0d61d14ec1de43b250b1cb27801c65
diff --git a/client/catalog/css/style.css b/client/catalog/css/style.css
index 0146b6e..d8be5c1 100644
--- a/client/catalog/css/style.css
+++ b/client/catalog/css/style.css
@@ -8,8 +8,6 @@
   background-attachment: fixed;
 }
 
-body#body {}
-
 .sidebar {
   height: 100%;
   max-height: 100%;
@@ -170,7 +168,7 @@
   content: "[=]"
 }
 
-#popup {
+.popup {
   top: 0;
   left: 0;
   position: fixed;
@@ -183,23 +181,15 @@
   pointer-events: none;
 }
 
-#popup > * {
+.popup > * {
   display: none;
   pointer-events: auto;
 }
 
-.modal-open, #request {
+.modal-open, #request, #loading {
   padding-right: 0 !important;
 }
 
-.sk-cube-grid {
-  display: none;
-}
-
-table:empty ~ .sk-cube-grid {
-  display: block;
-}
-
 #requestForm {
   max-width: 500px;
   /* min-height: 300px; */
@@ -267,3 +257,11 @@
 #direct-download-list:empty:before {
   content: "No names in the selection are available for direct download...";
 }
+
+#loading.loading #cancel-text {
+  display: none;
+}
+
+#loading.cancelled #loading-text {
+  display: none;
+}