Order labels, relationships and property keys in drawer.
Add `:help history` command and frame.
Update :help start information.
Update references to docs.neo4j.org to point to neo4j.com/docs.
Browser dependencies version bumps and cleanup.

- Remove commented includes.
- Remove unused dependencies.
- Upgrande font-awsome to 4.2.
- Update jQuery to 2.1.1 and jQuery-UI.
- Update Angular and its reverse dependencies to 1.3.0.
Add test and fix issue with concurrent drop and usage of legacy index.

Legacy index creation and deletion is not transactional, but its availability
was treated as such during the commit to store phase. If a particular index cannot
be found then it has been deliberately removed and thus any changes to it should
be directed to the bitbucket.
Some small grammar fixes in the docs
Incorrect grammar in assertion for tx resume
Merge pull request #3615 from craigtaverner/master

Small grammar fixes in docs and assertions
Merge pull request #3601 from martinfurmanski/2.2-legacy-index-concurrent-drop

Add test and fix issue with concurrent drop and usage of legacy index.
Merge pull request #3604 from nawroth/docs-neo4j-org

Update references to docs.neo4j.org to point to neo4j.com/docs.
Merge pull request #3614 from oskarhane/2.2-version-bump-and-cleanup

Browser dependencies version bumps and cleanup.
Merge pull request #3565 from oskarhane/2.2-update-help-frames

Update Browser help frames.
Merge pull request #3479 from oskarhane/order_metadata_items_sidebar

Order labels, relationships and property keys in drawer.