This commit would close issue #1279
Fix headlines in Zend\Test\PHPUnit chapter

Another small step for consistency in structure of docs
Update zend.filter.strip-tags.rst
Update zend.filter.strip-tags.rst
Merge branch 'fix/#1279-#1280-zend-filter-strip-tags-documentation'

Close #1279
Close #1280
Merge branch 'hotfix/#1286-zend-test-docs-headlines'

Close #1286