fixes #1689788 by Dave Cohen: removed broken language code.  i18n support in canvas pages may be broken.

by Dave Cohen: more changes from D6 branch merged to D7.  Javascript to show/hide connected markup.  Form alters for user register.

Fixes #1117214 by Dave Cohen,james.williams: fixes a PHP warning on account form, and probably fixes a bigger problem in which mappings to facebook accounts are accidentally deleted.

by Dave Cohen: several changes - initialize FB API in hook_custom_theme, earlier in Drupal bootstrap so that it can be used in menu callbacks.  Add method param to fb_graph(). fb_graph_load for menu wildcards.  Cleaned out some obsolete code.

fb_permission_access_perms is intended to be a drupal menu access callback that ensures certain perms are granted.  Not perfect - under development.

by Dave Cohen: new hook after setting props, gives third party modules a chance to set additional attributes of an app.

Supports page paths for both liked and not-liked pages.  AKA fan gating.