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
Merge branch 'patch-3' of git://github.com/mtorromeo/zf2 into hotfix/3273
[#3273] Added PHP-CS-Fixer rules

- Omit test file known to have issues (as they are required for tests)
Merge branch 'hotfix/3273'

Close #3273