Hack that repositions popup calendar

Conditionally-loaded jQuery code that moves the popup so its
closer below the input.

Addresses #3552
Don't use Bootstrap CSS from CDN.

Our custom build includes all the Bootstrap base stuff.  Save a
request.

Addresses #3552
Merge branch '7.x-1.x' of https://github.com/ghing/onboard_profile into 7.x-1.x