Display subject chains in details view, without permutations (#70)

See: https://wiki1.hbz-nrw.de/display/SEM/NWBib-Treffen+10.9.2014
Highlight active facet in dropdown menu
Show simple search field if advanced search params are not used
Tweak colors for info panels (based on lighter `@brand-color`)

http://gist.github.com/b7375a72de7b3e3d99ef
http://getbootstrap.com/customize/?id=b7375a72de7b3e3d99ef
Center text and add details to info message for no starred items
Don't treat dashes in words as marker for ES query string syntax

If we detect usage of ES query string syntax we don't switch to
logical AND. But we don't want this for e.g. `oer-erkenschwick`.
Override link color in `.leaflet-container` for consistency

Makes the links in item maps green like elsewhere
Use custom item map markers (red, library icon)

Using https://github.com/jseppi/Leaflet.MakiMarkers