Merge pep modules & use events
* merge mood, tune, activity, geoloc, avatar
* split them into functionality/ui
* tune, geoloc: fix timeout bug
* geoloc: fix guard unregistering
* tune, mood: fix memleaking delayed info
* mood: fix non-publish of offline-delayed data
* activity: unregister reply handler on disconnect
* fix silly copyright typo
* update hgignore
* v0.0.3
* due to server bugs, some offline buddies are still notified on publication,
causing error reply, that pep accepts as event. check message type/presence of error tag.
* do something about information duplication in CMakeLists
* check input/output for validity, where applicable
* extract common code into one place
* either put request methods into ui modules (compatibility measure) or rename them into pep_*
* add avatar
* pep_avatar, avatar_cache, avatar, aavatar (separate)
* hook_avatar_metadata_in @ pep_avatar
| hook_avatar_need_data_in (or symbol-resolved request) @ avatar_cache
V hook_avatar_data_in @ pep_avatar
hook_avatar_in @ avatar_cache
* (!!!) how to handle outgoing event? what and where should do what?
* handle url avatars (curl)
* report absence of avatar