File management dialogue enhancements:

- Double click on file/folder icon or name will navigate to the folder/file.
- Selected file/folder can be renamed by Rename button only. Double click rename is removed.
- Filename text box will not hide on smaller screen. Setting minimum width of File Browser fixed it.
- Path at top will only show directory name, not the file name and it is greyed out

web/pgadmin/misc/file_manager/static/css/file_manager.css

@@ -24,11 +24,15 @@
   float: left;
   text-align: left;
   line-height:1.9em;
-  text-shadow:1px 1px 0px #ffffff;
+  max-width: 367px;
+  text-overflow: ellipsis;
+  overflow: hidden;
+  color: #999;
 }
 
 #uploader h1 b {
   font-weight: normal;
+  color: #999;
 }
 
 .uploadresponse {
@@ -346,6 +350,7 @@ button.list span {
   -moz-border-radius: 5px;
   float: left;
   margin-right: 10px;
+  background: #EEE;
 }
 
 .file_manager #uploader .btn-group .btn[disabled] {
@@ -528,7 +533,9 @@ button.list span {
   -moz-border-radius: 3px;
   height: 22px;
   font-size: 13px;
+  font-weight: normal;
   display: inline;
+  width: 150px;
 }
 
 .allowed_file_types .change_file_types {