Start feature branch

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branch : permissions_in_activity_stream
Adding descriptions for membership in activity stream

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branch : permissions_in_activity_stream
after_create and after_destroy functions for memberships added

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branch : permissions_in_activity_stream
Changes in memberships for normal users included in activity stream

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branch : permissions_in_activity_stream
Changes in memberships of normal users added to the Activity Stream

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branch : permissions_in_activity_stream
Changes in name and location permission also added in the activity stream

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branch : permissions_in_activity_stream
Merge with default

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branch : permissions_in_activity_stream
Name and location changes for anonymous_user added to the activity stream

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branch : permissions_in_activity_stream
Layer permission changes for anonymous_user added to the activity stream

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branch : permissions_in_activity_stream
 'Remove button' for anonymous user deleted from membership view

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branch : permissions_in_activity_stream
Tests added for anonymous memberships changes

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branch : permissions_in_activity_stream
Fix issue #506 : Adding and removing user permissions it the activity stream

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branch : permissions_in_activity_stream
Permission in the activity stream almost done. Sintax checking missing

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branch : permissions_in_activity_stream
Adding admin permissions changes to the activity stream

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branch : permissions_in_activity_stream
Merge with default

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branch : permissions_in_activity_stream
Rewriting sentences of events in activity view

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branch : permissions_in_activity_stream
merge default

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branch : permissions_in_activity_stream
Rewriting activities' description for i18n

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branch : permissions_in_activity_stream
Bug fixing

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branch : permissions_in_activity_stream
Rewriting activities' descriptions for changes in admin permissions

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branch : permissions_in_activity_stream