Reimplimented avatar loading/caching via EGOCache

+ Added a dependency on EGOCache
+ Removed old icon import code.
+ Re-implemented icon download code.
+ Re-enabled icon downloading.
Fixed outgoing ad messages not showing up in chats

- FIX: Outgoing role-play ads finally show up now. Finally nicked that little bug.
- Added a bunch of #pragma organization. No one really cares, though.
Added a proper delay to the icon loading code. This throttles it to a maximum of 10 requests per second.
Fixed minor semantics, bumped version

+ Minor edit; changed an ‘include’ to ‘import’
+ Finalized version bump to 1.7
Added screenshot data from Google Code.
Added README
Minor readme edit