Cache application.encoding within HTML class to avoid unnecessary calls to Config::get();

Calling the "Config::get('application.encoding')" is expensive and within a large form (using the form builder) having it requested multiple times can result in a significant performance drag.

Caching this value reduced calls to Config:get within our project from 1200+ to 125. All core tests appear to pass with this change in place.
Refactor changes into single get_encoding() method within the HTML Class (in order to remove duplication of logic). All tests continue to pass.
Update to conform better with laravels coding style.
Rename static::get_encoding() method to static::encoding() to fit better with style.
Reformatted return

Changed the return of the method in line with suggestions from @JoostK.
Fix hardcoded "id" column in Eloquent auth driver.
Fixed wrong return type in phpdoc

Signed-off-by: Daniel Bøndergaard <db@helmstmt.com>
Fixes XSS vulnerability in Profiler
Merge pull request #1305 from nmalcolm/develop

Fixes XSS vulnerability in Profiler
clarified table naming conventions
Update laravel/documentation/database/eloquent.md

minor grammar update in docs
Update laravel/helpers.php

The e-helper and the __-Helper used the core-classes. 
So if I would like to override them, the helpers would still use the core-classes.
See this thread for further explanation: http://forums.laravel.com/viewtopic.php?id=2656 
Improving laravel relationship performance
Merge pull request #1314 from vFragosop/eloquent/relationship_performance

Huge performance increase on Eloquents relationships
Merge pull request #1307 from tillsanders/develop

Update laravel/helpers.php
Merge pull request #1294 from danielboendergaard/phpdoc-fix

Fixed wrong return type in phpdoc
Added a getInner method for retrieving the inner exception

Signed-off-by: Dejan Geci <dejan.geci@gmail.com>
Added Serbian translation

Signed-off-by: Dejan Geci <dejan.geci@gmail.com>
Fixing pivot on has_one aswell as properly indenting
Merge pull request #1322 from vFragosop/eloquent/relationship_performance

Fixing has_one iterations