Merge pull request #1448 from matthojo/gh-pages

Removed language navigation in the menu bar
Merge pull request #1451 from matthojo/gh-pages

Initial Korean language support
Add lost id's on Installation/Upgrading
Merge pull request #1461 from jgillich/gh-pages-ids

Add lost id's on Installation/Upgrading
Add Gmail service option to Gmail example
Merge pull request #1477 from mattwillsh/gmail_example_fix

Documentation: Add Gmail service option to Gmail example