Typos

Fixing comments, the English sounds weird.
Fixing typo

Thanks FnTm for the pull request review.
Merge pull request #755 from kenden/1.7

Rephrased comment, the English was weird.
Removed duplicated information
Merge branch '1.7' into 1.8
Moved $this->removeInserted() from method _before to method _after
Fixed a typo
Fixed #772: Codeception\Util\Driver\MySql->select() does not quote column names in the WHERE clause of the query it executes
Excluding abstract classes in addCest
Modified to suits PSR-2
Merge pull request #792 from filipgorny/1.8

Excluding abstract classes in addCest
indexed suites array by its name, to ensure it does not get added twice
Merge pull request #808 from tomtomsen/582_suite_running_twice2

Fixes #582, suites running twice
Changed getClassesFromFile() method to use tokenizer for reading classes from file.
- fixed suite name in environment run
Fixed test typo.
Use getInternalRequest to return Symfony\Component\BrowserKit\Request

Symfony 2.3 getRequest returns Symfony\Component\HttpFoundation\Response,
which does not have a getCookies method. Use getInternalRequest to return
Symfony\Component\BrowserKit\Request, which does.
Update 07-AdvancedUsage.md

Fixing a minor typo in the code example. 

<pre>self::URL</pre>

should have been 

<pre>self::$URL</pre>
Merge pull request #814 from UseAllFive/fix-get-cookies-error

Use getInternalRequest to return Symfony\Component\BrowserKit\Request
Merge pull request #813 from csavio/patch-2

Update 07-AdvancedUsage.md
Fixed code style and readability.