French translation correction in Contact module

Former sentences were weird or irrelevant.
Comment registered author fix

Fix the display of the user name of the author of a comment, for
registered users.
added the '

added the '
Removing admin menu event.

This didn't work correctly, and the details.php menthod is much more efficient.
Merge pull request #2532 from sgoodwin10/2.2/develop

added the '
The page description doesn't need to be a text input.
Some extra commenting for the template library.
Merge branch '2.2/develop' of github.com:pyrocms/pyrocms into 2.2/develop
fix for issue #2535
fix for issue #2535 and some whitespace to the previous commit
Merge pull request #2536 from wshatch/2.2/develop

Closes #2535: Streams add_fields function returns bool
Merge pull request #2530 from tristanjahier/2.2/develop

French language correction + Comments module author fix
Fixing a typo in {{ pages:page_tree }}. A sort is not an order
Merge branch '2.2/develop' of github.com:pyrocms/pyrocms into 2.2/develop
Updated the copyright info for the default theme
Removed the Twitter plugin and widgets due to closing API. Thanks Twitter!
Fixed typo in pages plugin documentation
Corrected the usage of custom fields in {{ pages:display }}. Both pages:children and pages:display now use the {{ custom_fields }} {{ field }} {{ /custom_fields }} syntax.
Fixes #2520
Parse variables as well as callbacks after initial parse.
Added a fix to the ajax error handling so it doesn't shout "abort" in a
notification alert box when a request is canceled