Fix minification errors in confEditor
Fix label selector

Fixes #124. Was mostly a typo (used a wrong function name).
Add arethusaContextMenus directive
Make sentence id known to tokens
Refactor arethusaContextMenu
Track menus by their fullId (sentence + word id)
Slight change for multi-selection head changes
Merge pull request #126 from latin-language-toolkit/various_fixes

Various minor fixes