Merge pull request #92 from liuch/master

fixed typo
Fixed contacts tooltips colors

KDE uses tooltip color roles to render background, but psitiplabel had some other default roles.
So we had a mess mixing tooltip and not tooltip roles
Remove line-height from new_classic webkit theme.
Use lookahead when parsing _/*
Fixed crash in AlertManager (double free)
Allow no text in html message content. for example if it's image
Add correct checks of new Mac OS X versions in SystemInfo.
Update checks of MS Windows versions in SystemInfo.
Merge pull request #99 from tehnick/mac-ver

Add correct checks of new Mac OS X versions in SystemInfo.
Allowed autofill password for muc join dialog.