Refs #12714 - Improve proxy services tab

fixes #12714 - Show proxy status in index, and create a show page for proxy

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.

Fixes #9589 - Add documentation button to various models

Fixes #8963 - Rename trunc helper to trunc_with_tooltip

Fixes #8830 - Allow two-pane to work on show

Fixes #8785 - HTML syntax fixes - add thead/tbody, fix formatting

Fixes #6710 - unicode characters in url parameters

Original methods to_param defined on resources called name.parameterize
to get rid of url-unsafe characters. This function unfortunately also
stripped off unicode characters.

Changes:
- parameterization extracted into a separate module Parameterizable...

Fixes #7588 - pagination info not a button and aligned

Fixes #6713: Long names needs to be truncated while listing