Basic Eloquent unit tests.

Lacks database operations, relationship testing and some magic method
calls.

When you had a synched Eloquent model (e.g. without changed values) but
one of those values is `null`, then that value would be considered as
dirty. `Eloquent::changed` returns false, but the value is present in
`Eloquent::get_dirty`.

This fix makes sure that a `null` value in `$attributes` is only
present in `get_dirty` when it wasn't at all *set* in `$original`.

Added Portuguese Language

Fix #1140: Auth / Eloquent / Custom password getter

Delete phpunit.xml when unit testing

Updated Bulgarian translation

Looks like that was committed accidentally.

Allow Input::json() to return array instead of object

Changed the folder name from "gr" to "el"

Signed-off-by: George Drakakis <lolly@lollypop.gr>

This fixes #1140.

Added Greek Language

Signed-off-by: George Drakakis <lolly@lollypop.gr>

Get rid of duplicate code for DROP TABLE in schema grammars.

Fix insert() method for related models.

Improved code examples for inserting related models

Add Routing Wildcard '(:all)' to Documentation

Update laravel/documentation/database/fluent.md

Minor/unprotect eloquent timestamps

Deleted an anchor of top of line. Defined "config", but it was reffered ...

Change some Markdown to fit other md files' format.

[Session] Trigger garbage collection (sweep) manually

German translation for array validator messages

Fix Query::lists() for empty resultsets

Fixing a bug with saving data to pivot table

Fixed Exception thrown when passing null $value to Form::submit(), Form::reset(), Form::button()

Reorg and Additions and Improvements to Templating Documentation