Obliterate JQuery and use native JavaScript

[grafana-dee]

Philosophy is of graceful degradation with the work done on the server... however JS is needed at some points (maps on events, or to make the text entry textarea a little friendlier, or to update relative times every minute). Wherever we have JS today we are probably using JQuery. We no longer need that and can simplify and make a lot of the code more maintainable by removing it and rewriting things in pure JS.

Likely this will also fix a bug in which trying to attach multiple files to upload does not work.

[pascalopitz]

Am I right in thinking this would also mean rip out bootstrap?

[pascalopitz]

Made a start on the base.js file in this PR: #135