added google cloud messaging introduction and quick start
Add doc for new Zend\Test component
Fix display bugs
Add zend\test in index
Refac zend\test doc folder archi
Fix index summuary
Doc for element manager
Fix lineos
Update docs/languages/en/modules/zend.db.sql.rst

Spelling fix. for -> four
Merge pull request #556 from chrisoconnell/patch-3

Update docs/languages/en/modules/zend.db.sql.rst
Merge pull request #547 from bakura10/zend/element-manager

Doc for element manager
Update docs/languages/en/modules/zend.db.sql.rst

Fixed const value for insert->value method.
Fix name of methods
Merge pull request #557 from chrisoconnell/patch-4

Update docs/languages/en/modules/zend.db.sql.rst
ensuring files are copied to tmp with modification time unchanged to avoid excessive rebuilds of all docs
Merge pull request #559 from shevron/fix/makefile-dont-rebuild-all

Avoid full rebuilds by copying files to tmp/ with preserved mtime
Remove unused filter alnum and alpha docs (moved to i18n docs)
Cleanup of Filter doc headings and toc
Cleanup of Form Element doc headings/toc
Update docs/languages/ru/modules/zend.db.sql.rst (see #557)