Use globals
[mms] Add Horde_Prefs#changeScope().

[mms] Pref scopes are now loaded on-demand.
Load prefs on-demand.
Use cached session language value
[mms] Add Horde_Cache based cache driver.
Use local injector in factory
[mms] Add Horde_Prefs#getCache().
[mms] Add Horde_Registry#getAuthInfo() and Horde_Registry#getAuthApps().