Went over last merge
Restrict to Qt 5.1.0 and higher

Because of the use of QHash's initializer-list, that was introduced in 5.1.0
Updated Travis to use Qt 5.1.1
Updated Core submodule
Added support of TOX_USERSTATUS
Fixed size of Input Widget
Fixed renaming not working properly
Added destructors
Fixed order of context menu actions
Fixed Friend Address being shown instead of Client Id
Merge branch 'upstream/master'