Gravatar Support

Signed-off-by: ziycon <ziycon.eire@gmail.com>
Code clean up

Signed-off-by: ziycon <ziycon.eire@gmail.com>
Further code clean up

Signed-off-by: ziycon <ziycon.eire@gmail.com>
More code cleanup and a fix or two

Signed-off-by: ziycon <ziycon.eire@gmail.com>
! Resolved the conflict.

Signed-off-by: Antes <antes@simplemachines.org>
Merge pull request #1 from Antes/gravatar

Conflict Fix :P
Merge branch 'gravatar_support' of https://github.com/ziycon/SMF2.1 into dev

Conflicts:
	other/install_2-1_mysql.sql
	other/install_2-1_postgresql.sql
	other/install_2-1_sqlite.sql
	other/install_2-1_sqlite3.sql