win32: Don't allow installing on Vista

It does not run on Vista
win32: Update Python links
Fix possible crash in spell check

Closes #1048
Fix apostrophe related spell check issues
Add GeeksIRC and IRC4Fun to network list

Closes #1057
Closes #1058
Fix various crashes with pluginpref
Fixed expand_homedir to handle paths like "~user" correctly.
Update translations
Bump version to 2.10.1