LP1825851 Server managed/processed print templates

LP1825851 Server managed/processed print templates

Adds a new database table config.print_template (and IDL class) for
storing configurable, org-specific print templates.

Adds a web service which accepts POSTed print data and generates a
print-ready document.  Includes example Apache configs.

Teaches the AngJS and Angular apps to use the new web service for
generting output.

Adds and Angular print template administration interface.

Example setup using HTML::Restrict for scrubbing unwanted HTML elements
and attributes from print documents for security.

Signed-off-by: Bill Erickson <berickxx@gmail.com>