Merge pull request #76 from drizt/master

Qt5 fix. Link with xcb on Linux.
Merge pull request #77 from drizt/master

fix x11 qcm test for non-linux systems
Disable dbus on windows by default
Qt5 ms windows fixes
Remove unused lastMsgTime_
MUC history since (thx:Dmitriy Deshevoy)
Submodules updated
Merge pull request #81 from bvp/master

Submodules updated
plugins Qt5 fix

added HAVE_QT5 define and widgets qt module
when Qt5 building