activity 6.x-1.2

Changes since DRUPAL-6--1-1:

• #391770 Added read-write/read-only permissions for comments on activity.
• removed need for hidden/shown classes for activity comments form and just
  used a jQuery slideToggle function.
• added and revised styling rules for activity comments and activity comments delete links.
• added code to delete activity comments when activity records for an activity
  contrib module are deleted upon uninstall.
• added in ability to delete activity comments. Moved CSS and JS files to be included only
  when needed as hook_init is to be used for files that should be included on -any- page view
  which is not our case.
• #427746 fixed typo and set missing aid value to pass to activity_invoke_activityapi. Thanks to stella for the patch.
• #430508 PRIMARY KEY was defined incorrectly for activity_history. Also removed t() from table
  descriptions per change in http://drupal.org/node/322731.
• #413076 check for defined UR types before installing activity defaults.
• #396960 added a block to show activity of user whose profile page is being viewed.
• #284750 allow activity messages to be hidden by role via 'hide activity' permission.
• fixing type in permission check
• minor code cleanup - ust a couple spacing issues
• #430620 missing an 's' on a permissions check.
• fixing a typo in user_relationshipsactivity.
  fixing #391424 - language param was incorrect
• #408202 Don't pull up a list of activity by user's relationships unless the user actually has relationships established.
• #412868 hide activity on display when activity concerns a user that has not logged in yet.
• #412868 added status and access fields from {user} table to the object returned by activity_user_load.
• #359772: adding t()s to the rest of the default token messages