[turbolizer] Features and bug-fixes

tools/turbolizer/turbo-visualizer.css

 .visible-transition {
     transition-delay: 0s;
     transition-duration: 1s;
     transition-property: all;
     transition-timing-function: ease;
 }
 
 .collapse-pane {
     background: #A0A0A0;
     bottom: 0;
     position: absolute;
     margin-bottom: 0.5em;
     margin-right: 0.5em;
     margin-left: 0.5em;
     border-radius: 5px;
     padding: 0.5em;
     z-index: 5;
     opacity: 0.7;
+    cursor: pointer;
 }
 
 .search-input {
     vertical-align: middle;
     width: 145px;
     opacity: 1;
 }
 
 .button-input {
     vertical-align: middle;
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 li.nolinenums {
   list-style-type:none;
 }
 
 ul.noindent {
   -webkit-padding-start: 0px;
   -webkit-margin-before: 0px;
   -webkit-margin-after: 0px;
 }
 
-input:hover {
+input:hover, .collapse-pane:hover input {
     opacity: 1;
     cursor: pointer;
 }
 
 span.linkable-text {
     text-decoration: underline;
 }
 
 span.linkable-text:hover {
     cursor: pointer;
@@ skipping 76 matching lines @@
     border-radius: 5px;
     padding: 0.5em;
     z-index: 5;
     opacity: 0.7;
 }
 
 #hidden-file-upload{
     display: none;
 }