prevents zimbra to read events from server (fix for issue #103)
added the optional account name during account creation. this is for
issue #108 and issue #103 (the account name used at the moment is used
by android for the email address of the organizer)
add note for account creation
Merge branch 'master' into v1.9

Conflicts:
	CalDAVSyncAdapter/res/values-de/strings_activity_authenticator.xml
	CalDAVSyncAdapter/res/values/strings_activity_authenticator.xml