ispy: skeleton of embedded display with images

* (PR #564)
ispy: move of help code to separate html file

* (PR #564)
ispy: addition of css

* (PR #564)
ispy: event display in portal

* Populates event loader.
* Loads events from portal.
* Prev and next button.
* Factors out popups.
  (PR #564)
ispy: comment out help for not present features

* (PR #564)
ispy: rm popups for not present features

* Also, adds call to additional invert function. (PR #564)
ispy: embedded CMS display

* Uses bootstrap grid for display, inverts color css and changes added.
  (closes #394) (closes #388) (closes #280) (closes #240) (closes #300)
  (PR #564)
UI: adds breadcrumbs in record and collection tmpl

* (closes #543)
UI: fixes html escaping for coll descriptions
records: fixes record in LHCb-Tools

* fixes template styling
UI: updates missing breadcrumbs in coll_pages