CMS: author/experiment field update in Tools

* Fixes author fields and accelerator/experiment field in
  `cms-tools-ispy.xml`.  (closes #142) (addresses #145) (PR #217)

Reviewed-by: Tibor Simko <tibor.simko@cern.ch>
CMS: fix typos in MARCXML data files

* Fixes typos in CMS data files.  (closes #195) (PR #195)

Reviewed-by: Tibor Simko <tibor.simko@cern.ch>
UI: FIXED "Usage" panel in CMS Tools
UI: URL section for ex.links in "Tools" collection

* (addresses #197)
UI: real file descriptions in templates

* FIX - if no file description exists -> hide field (closes #204)