Update to datecode 20130507

Major changes were made in the plugin infrastructure in how  it saves
the settings for each instance.
So all of you will have to initialize the login instance. (no big deal)
Retooled the API on the plugin on both ends for reliable login.
Plugin now cleans up after itself
The "Show Missing Files" dialog has been fixed and retooled.
Remove the section for setting "album password until I can getting it
working reliably.

Lots of small updates, fixes, debug messages