Fixes #20035 - Adds API link to About page

fixes #18796 - do not flot charts by default

flot initalization relay on css class, if the css class conflict,
legacy flot to try and initalize on the same div as c3.

this removes charts.js to load by default, and only load it in pages
which requires it.

fixes #16786 - don't call to_sentence on associations

Fixes #15992 - Truncate compute resources name in about page

fixes #16142 - replace Unicode copyright with HTML encoded symbol

Fixes #14817 - load JS only in relevant pages

The proxy_status.js and about.js files should only be loaded on relevant
pages.

fixes #12746 - list compute resources from plugin definitions

Load the full list of known CRs from plugins on the fly, instead of
modifying the class-level list of supported plugins. Since plugin
definitions don't get reloaded, this allows the ComputeResource class to...

Fixes #13307 - Add ids to enable theme plugin overrides easier jquery selection

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

Fixes #12506 - Show smart proxies version in about page