Fix bug 933340 - Lightbeam for Firefox - Add database pages back

We took down database related pages a while ago due to some technical issues with the db server. Adding them back now with minor style changes and code cleanup.


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Opening a new PR since I couldn't solve a rebasing problem happened in the previous PR (https://github.com/mozilla/bedrock/pull/1558)

Note that we are still trying to get a SSL certificate(https://bugzilla.mozilla.org/show_bug.cgi?id=958220).