Introduce a global ExcludedFiles instance to avoid loading the global
exclude lists several times.
One could still add per-folder exclude lists by checking these after
the global ones.
Those class are maintaining the folder for the mirall configuration
They are not usefull in command line clients
Also the FolderWatcher is only used by the folder and not used by the
command line clients
- libname is now derived from binary name (which is lowercase)
- remove superflouos reimplementation of appName() in owncloud theme
- APPLICATION_SHORTNAME is now optional (and if not set, equals
APPLICATION_NAME