More responsive Fauxton

[garrensmith]

For a full responsive Fauxton I think we would need: throw out the current not maintained Bootstrap 2 which is mainly just used for button styling at the moment make use of an actively maintained bootstrap and use it's helper to create responsive grids Some good points from @michellephung Suggestions:

1. We could collapse the left most nav when the screen is below a certain width.
2. Also maybe when the width gets really small, collapse the api url/ add new database/ search buttons down to icon-only (like in buttons the code editor).

Taken from https://issues.apache.org/jira/browse/COUCHDB-2565

[iamgollum]

I second this and willing to contribute to this repo. The Search button should be responsive at the very least. I will start working on this next week. See https://github.com/apache/couchdb-fauxton/issues/998

I think some of these issues on UX should be grouped and tagged and then broken out into separate issue enhancements to tackle.