Replace NRW logo with coat of arms, add home icon to brand

See https://wiki1.hbz-nrw.de/x/BgCHAg
Nav bar: split up 'Systematik', add 'Links', update 'About'

See https://wiki1.hbz-nrw.de/x/BgCHAg
Update spatial facet to use new icon as in nav bar
Increase facets limit to improve count accuracy

See https://wiki1.hbz-nrw.de/x/BgCHAg
Add `frequency` to details view

See:
https://wiki1.hbz-nrw.de/x/BgCHAg
https://github.com/hbz/lobid/issues/81
Update labels in details view

See https://wiki1.hbz-nrw.de/x/BgCHAg
Use 'Bibliothek' in labels, link to library homepage if it exists

See https://wiki1.hbz-nrw.de/x/BgCHAg
Group resource items by libraries owning them

See https://wiki1.hbz-nrw.de/x/BgCHAg
Tweak `creator` label in details view

NWBib mail 2014-11-25, UP
Color 'Rheinland' green, 'Westfalen' red in main map

NWBib mail, 2014-11-24, HF
Add help route, initial page, and link from nav bar

See https://wiki1.hbz-nrw.de/x/BgCHAg
When available, add links to OPAC for items

See:
https://wiki1.hbz-nrw.de/x/BgCHAg
https://github.com/hbz/link-templates
Fix issue causing resources with one item to skip item display
Update pin color to correspond to new logo and main map color