Creating new View when on View Metadata page doubles up page content

Fix for proper view removal

Note: there’s a bug where there’s an error when hard reloading the New
View page. But that’s already fixed in master.

Closes COUCHDB-2349
Polling interval field CSS update
Fixed unit test
Squashing.

Closes COUCHDB-2371
Adding right header back to databases page.

This was broken in the recent right refactor of the right header.

Closes COUCHDB-2381
Remove api bar from RightAllDBsHeader

This expands upon Christian's work and removes the api bar component
from the RightAllDBsHeader. It mimics Christians work for the documents
module.
Move parts of fauxton.less to templates.less

Fauxton.less is pretty hot code when you look at the commit
frequency. This commit just moves the parts of todays
fauxton.less to the new templates.less file to avoid a
long living branch with endless merge commits. This way
my colleagues can already use the new templates.less file
and have the advantage of a small separate template.less file
as soon as possible.

Based on the work of Jenn Schiffer <jenn@pancaketheorem.com>
(@jennschiffer) and Sue Lockwood <deathbear@apache.org>
(@deathbearbrown)
Move parts of fauxton.less to formstyles.less

Fauxton.less is pretty hot code when you look at the commit
frequency. This commit just moves the parts of todays
fauxton.less to the new formstyles.less file to avoid a
long living branch with endless merge conflicts. This way
my colleagues can already use the new templates.less file
and have the advantage of a small separate template.less file
as soon as possible.

Based on the work of Jenn Schiffer <jenn@pancaketheorem.com>
(@jennschiffer) and Sue Lockwood <deathbear@apache.org>
(@deathbearbrown)
New Query Options tray added

This is a cherry-picked branch the clears up the old PR:
https://github.com/apache/couchdb-fauxton/pull/78

For comments regarding this PR, see the original PR. For scope
and discussion of the fix, see the Jira ticket:
https://issues.apache.org/jira/browse/COUCHDB-2347

Closes COUCHDB-2347