Attempt to rework the review screen to be more useful
Fix indenting and whitespace

because it was the only way to track down the errors..

Use more real estate on xl screens

Prior to this change, on a screem >1200px wide the .container was
capped at 1140px, which leaves a lot of whitespace.

This increases the cap to 1900px, more effectively using
larger screens while still preventing the text from getting so
wide as to be hard to read.

Partial fix for #109

Update jquery version to the full version

datatables uses the fade effect

Restore buttons to review tables

- Switch from dataTable (returns a jquery object) to
DataTable (returns a DataTables API object)
- Update versions of libraries

Doesn't quite work, needs the full version of jquery rather than the
slim version.

Increase initialdelay to 180 seconds.

120 seconds is a little too short; the instance is getting killed partway through coming up.

Add a custom saml_config_loader

* Makes the assumption that we only have one set of keys, and only one
IDP
* If any of the SAML2 variables use relatives paths, these will be
replaced with absolute paths under the current requests's hostname,
port, and scheme