Source jquery before including other html pages

Same for bootstrap. We can't use functions from these libs
in included htmls, so we need to source it first.
Support of customer-found tag filtering

Currently it's done by AJAX GET request.
It's a bit hacky and needs to be improved.
I wanted to perform all required filtering in JS,
avoiding any calls to the backend. Unfortunately,
Launchpad doesn't provide tags in returned collection
of bugs, and any additional request for tags slows
the request down. I had to use separated query with
provided 'customer-found' tag to filter on LP side.