First approach to social connect (Facebook only)
Added top button
Merge branch 'icy_phoenix.git/master'
Merge branch 'origin/master'

Conflicts:
	includes/usercp_register.php
Started a refactoring for groups functions (to be able to change how groups works hopefully one day)... something may still be buggy... fixed also a bug for data-href.
Social connect bugfixes
Merge branch 'MG/master'

Conflicts:
	includes/usercp_register.php
Bugs
Merge pull request #44 from GabrielAnca/social_connect

Social connect
Quite important commit... both Social Networks Connection (Facebook first...) and removed two main features from core files (Links and Sudoku) which have been moved to plugin.
Social Connection: thanks to KasLimon
Links And Sudoku; thanks to InformPro
Few bugs fixed as well
Moved some ACP modules, emptied robot.txt (there was a lot of old mess)
Fixed a bug in the install process introduced with last commit, and refactored a couple of functions. Few edits to CSS as well.
Merge pull request #1 from MightyGorgon/master

Upstream changes