all code dealing with video clips deleted.

Syndetics no longer offers video clips and they were the only provider.
Bootprint view icons restored. Nostalgia for the win.
Added missing templates/CSS.
Merge branch 'master' of https://github.com/vufind-org/vufind
Bootstrap theming for RandomRecommend. Some small tweaks to a similar template.
Added missing error check; expanded tests.
Merge pull request #150 from TriCollegeLibraries/videoclips

all code dealing with video clips deleted.
Doc fix.
Skip the lightbox for Institutional Login.
Added Site/logOutRoute config setting to control post-logout redirect.
- Progress on VUFIND-982.
Allow some advanced search elements to be overridden.
- Will be used by forthcoming EDS implementation.
Added mechanism for suppressing display of certain filters.
Merge branch 'master' into ebsco