dexEdit: adjust the height of the definition div automatically to keep it
at 100%.


git-svn-id: http://voronet.francu.com/repos/DEX@863 8d550267-2627-4c68-899f-85492a8dd5ca
dexEdit:
- "Save averything" saves the meaning being edited (no longer requires a confirmation)
- when a meaning/submeaning is added, select it and start editing it immediately.
- adjust definition div height on window resize.


git-svn-id: http://voronet.francu.com/repos/DEX@864 8d550267-2627-4c68-899f-85492a8dd5ca