Fix Missing Autoloaders File Type Inspectors

Fix Missing Autoloaders File Type Inspectors

Add file type inspector classes to startup/autoload

- Add FileTypeInspector
- Add ImageFileTypeInspector
- Add FlvFileTypeInspector
t2 can't translate plurals when target language don't have plural form
Fix outdated cache after saving tracking codes
Remove addHeaderItems for sitemap.js

Remove addHeaderItems for sitemap.js

sitemap.js is now part of ccm.app.js so call returns 404
class added to login form

it's a bit tricky to style the login form since we don't have a
class. This PR adds a class, no sure about the official name
conventions here but it makes styling much easier.
fix mixin call

the order of the parameters is wrong
https://github.com/concrete5/concrete5/blob/master/web/concrete/css/ccm_app/twitter_bootstrap/mixins.less#L139
class for "forgot password" form
profile page link name translatable

http://www.concrete5.org/developers/bugs/5-6-2-1/profile-page-names-not-translated/
indentation fixed
Update core_scrapbook_display.php

Solve fatal error that *can* occur in automated job (Index Search Engine - All). Check if block (still) exists. 

Fatal error: Call to a member function getInstance() on a non-object in 8 core/controllers/blocks/core_scrapbook_display.php on line 32
Merge pull request #1273 from bluefuton/job-installed-typo

Fixed typo in "Job successfully installed" success message
Add support for Imagick if present

Imagick is faster and more memory efficient than GD but less commonly installed. This uses Imagick if present otherwise falls back on GD. This may help reduce out of memory errors on larger images.
Merge pull request #1319 from ojalehto/refactor/date-helper/duplicate-variable-assign

Removed duplicate variable assign
Merge pull request #1326 from patrickheck/patch-13

remove DateHelper
added jpeg to mime helper
pulled jpeg from mime helper - realized approach to this helper will have to change because of duplicate keys to array
Fix Mime Type Helper on Multiple Extensions

Fix mime type helper on multiple extensions for the same mime type.
Previously if there were multiple extensions the last one would be the
only one

- Reverse mime type array
- Flip methods
- Add phpdoc
Merge pull request #1365 from mkly/fix_mime_type_helper_on_mutliple_extensions

Fix Mime Type Helper on Multiple Extensions
restored case insensitivity, corrected some naming and comments
add cache settings to environment information