Improvements for Configpaths

• Add GUI Folder to Configpaths

• Paths that are not dependent on profile or configdir commandline options, are now available without calling init This makes it possible for other modules to have access to these paths without a running Gajim instance for example the module gtkexcepthook.py can be executed for testing purposes by itself, but needs the path to the GUI folder

• Add a get() function

  currently it looks akward if we need to access PATHs

from common import configpaths gajimpaths = configpaths.gajimpaths print(gajimpaths['VCARD'])

    now we can do it like this
    ```
from common import configpaths
print(configpaths.get('VCARD'))

• We dont need to windowsify directorys that are not created by gajim (non-config dirs), they are always notcapitalized
• Unicode conversion is not necessary anymore
  • tempfile.gettempdir() returns always unicode
  • os.environ.get() returns always unicode
  • os.path.expanduser() we get what we put into (we put Unicode in)
• Remove not used code