Parse docblock indented with tabs

This fixes the regular expression used to clean-up the docComments.
The tab escape (\t) was not parsed correctly because it was specified
inside a single quoted string.

Additionally the cleaned-up doc comment ($this->cleanDocComment) was
used by the DocBlockScanner.

This fixes #2445
Fixed DOCBLOCK_WHITESPACE token to detect tabs

This definetely fixes #2445 and passes all unit tests.
New unit tests for docblocks indented with tabs that
fail to be parsed without this fix.
Use || instead of or
Fixed wrong return usage and added @throws docblock
remove else in already return early
remove else in other because already return early
remove trailing_spaces
Removed unused variable
Hotfix #3046 - set /dev/urandom as entropy file for Session
Adding failing test case
Increment count when adding keys to config
Fixed #3282
Fix indentation, add trailing ',' to last element in array
Missed the Zend\Text dependency for Zend\Mvc in composer.json
Fix an issue with inheritance of placeholder registry. Detected automatically with aop inheritance
Fix buffering getTotalSpace
Fixed FileGenerator::setUse() to ignore already added uses.
Fixed FileGenerator to allow passing in array of strings.
update copyright year : change 2012 to 2013
remove relative link in CONTRIBUTING.md