[FIX] hr_timesheet: fixed issue in code cleaning, xmlid_to_res_id returns an id, not the old model, res_id.
[IMP] im_chat: set auto focus on search box
[IMP] OpenChatter: display who likes a post

Cherry-picked from 8e7dfaed151dcc9ed3a5b4bdd87e8afcad51a765
Closes #1729
[FIX] web: scroll should move top on clicking menu on top bar

Cherrypicked from 0a1fa70aab548e290171e71b5e56226255af35d7
Closes #2259
[IMP] mass_mailing : have an option to store th send emails