Options: Prevent flickering when switching tabs
RTL: Place text to the left of the tab icons in Options (issue #44)
RTL: Improve certificate table layout a bit (issue #44)

The layout is still wrong (QTBUG-15995) but that's a step forward
Merge pull request #166 from orgads/rtl

Rtl fixes
update gitignore
Move psi event system to shared pointers. Tnx KukuRuzo for the patch
correct behavior for messages.enabled option. Tnx liuch for the patch
set avatarFactory for groupchat's private userlistitem
some filetransferdlg improvements. Tnx liuch for the patch
relink iris
get rid of toolbar buttons arrows for actions with popup menu
add Send button, disabled by default. Use options.ui.disable-send-button option
improve title hints for some dialogs
add options.ui.contactlist.disable-scrollbar enabled by default
fix eventnotifier hiding
relink libpsi
fix some memory leaks. tnx liuch for the patch
fix crash when try to send message when status is offline
fix historydlg's calendar on same OS has no enough space
fix possible crach when 'Server Authentication' dialog viewing for a long time