Fix Issue 280: Update layer list and Move To select box after moving elements.  Fix Issue 281: Make side panel resizable up to 300px, make default snap-open size 150px
Fix Issue 280: Update layer list and Move To select box after moving elements.  Fix Issue 281: Make side panel resizable up to 300px, make default snap-open size 150px

git-svn-id: 829f041edcabe93b7893c4ec42f5993156d1fcf0@828 eee81c28-f429-11dd-99c0-75d572ba1ddd

kenwenzel/svg-edit,kenwenzel/svg-edit,kenwenzel/svg-edit