Fix for #937

As I mentioned in bolt/bolt@0640bca81d16361630ff326cadc9d47a3125b932 I encountered some errors. I figured out the url check for thumbnails is not made properly. The REQUEST_URI variable is not started with /thumbs when Bolt is running from a subdirectory. I also used timthumb.php-s check for prober url format beacuse I think we don't want malformed thumbnail url-s to redirected to timthumb.php.
Fixing two "aborts".
Merge pull request #970 from doertedev/master

That's what you get from not having tests.
Merge pull request #971 from ntomka/thumb_patch

Fix for #937
axonomy default value

add support for taxonomy default value when options is set
Extension limitation with fileupload

Attempt to establish a test on the fileupload (js) to allow only certain
file type.
Using the keyword "extensions" word in the declaration of the fields in
contenttypes.yml
Added RateIt extension based on the jQuery RateIt library.  See: http://rateit.codeplex.com/
Set cookie on rating submission and lock rating bar if cookie is set
(page refresh, etc)
* Only give feedback to end user on a rating
* Only set readonly on a rating that is successfully recieved
Merge pull request #977 from GawainLynch/features/RateIt

Added RateIt extension based on the jQuery RateIt library.
Replace missing code in Authenticate extension. Fixes #944
Merge branch 'origin/master'
Don't escape sortorder if it is for RAND() or RANDOM()
Attempt to fix broken insertion of JavaCript in
\Bolt\Extensions::insertAfterJs()
In an extension, calling the following causes the passed JS to be
inserted inside the last <script></script> block:
$this->insertSnippet(SnippetLocation::END_OF_BODY, $js );

And example of this is enableing the Google Analytics and RateIt
extensions, the RateIt code will be inserted inside the GA script block
(assuming Google Analytics is listed before RateIt in the
'enabled_extensions' config parameter)
Moving upwards some deprecated calls.
Some minor PHPDoc fixes
Tiny class name qualification fixes.
Add a cron Nut job
Add a cron service provider
Add cron dispatcher, event class and database table