Bookmarks 2.8

- vertical scrollbar;
- button to hide/show "x" buttons;
- bookmarks full-width in mobile (no margin-right);
- minor UI and UX fix;
'auto draw' support drawtools current color
Fixed number version
website: update for new 0.16.4 release
Fixed problem with jQuery UI sortable

- jQuery UI sortable drag initiation is slow when container has hidden
items;
- removed old code to open/close BookmarksBox in IITCm;
Fixed css for mobile version

The Bookmarks Panel not closed. Now work.
Merge pull request #754 from ZasoGD/Bookmarks-2.8

Bookmarks 2.8
added fix-googlemap-china-offset plugin
Merge pull request #768 from breeswish/fix-googlemap-china-offset

New plugin: Fix the offset of Google map in China (Tweaks)