Fixes #11458 - Override inline for class parameters

This implements override inline for smart class parameters and smart
variables in host and hostgroup edit forms.
Global variable override inline will be done in a seperate PR.

Authors:
Ori Rabin <orrabin@redhat.com>...

Fixes #12303 - Added a correct url to ptables 'Useful template functions and macros'.

Fixes #8800 - Clip table cells only when needed

For clipping to work, table must have class `table-fixed` and the cell
have class `ellipsis`. Also column widths should be set in table head.
Clipping will occur automagically with tooltip.

refs #11738 - fix incorrect capitalisation and host group wording

fixes #11738 - add missing punctuation to provisioning template view

Fixes #11625: refactor the ace editor to make it reusable.

Make the ace editor reusable and include it on the global parameters
page.

http://projects.theforeman.org/issues/11625

Fixes #7096 - Adds STI to templates

This commit converts Ptables to be just another type of Template so it
gets the same features as ConfigTemplate. ConfigTemplate was renamed to
ProvisioningTemplate to reflect UI and the name under it's commonly known.