Merge pull request #8916 from jmcanterafonseca/fix_hotmail_already

Bug 856646 - Hotmail contacts without user_id are not detected as alread...(cherry picked from commit e1dca8a7a486e23137d6d70efccc4fadfffb28e5)
Merge pull request #8617 from gtorodelvalle/dialer-bug-846261-cannot-delete-unknown-calls

Bug 846261 - [OPEN_][call log]some call log can not be delete.(617002041389) (r=jmcanterafonseca)(cherry picked from commit 9f410bd165e5e7b20790f6b9c4c00ccb7fddd567)
Bug 822585 - Change hand image
(cherry picked from commit 23aa5cdd1efbfa3f63557f909fc2de9e6454560e)
Merge pull request #8616 from gtorodelvalle/dialer-bug-850170-grouping-unknown-calls

Bug 850170 - [Dialer] Unknown (hidden) calls are not grouped (r=jmcanterafonseca)(cherry picked from commit 8cb533449e37a68c2f319617814f58855c0baa3d)