Move location note under map

According to the wireframe, location note must be under the map. Also change label to "Noter:".

LP#15771745
"Færdiggørelse af assetside (manglende felter) som i wireframen  -  Årstal visning rettet i prototypen og skal opdateres."
Adjust colophon on search view

Colophon shows catalogue name with a link to it.

LP#15771745:
"Søgeoversigt assetvisningen: Thumbnail, Korttitel, Beskrivelse, Katalog"
Search in a form element

To allow for search submit on Enter, the search field group is now a form element.

LP#15771745
"Søgning på enter når der er valgt en term"
Search box magnifier button added

Search box button use magnifier icon + text for screen readers.

Note that button height is calculated like the search box' input field: lineHeight + paddingTop + paddingBottom + borderTopWidth + borderBottomWidth.

LP#15771745
Align typeahead width with search field width

Set a container around search box' input field and typeahead to equal their width.

LP#15771745
Add plus icons to nav + link text to catalogues

Navigation in the main menu should work like this:
- click on text links to the catalogue, category etc.
- click on plus sign opens the tree structure with submenus

This commit adds icons and links text to catalogue search pages.

LP#15771745
"Menu funktion som irma.dk i mobil"
Add search page title

The title should change according to context: Frontpage, catalogue page, search result etc.

LP#15771745
"Overskrift på Katalogforside"
Merge pull request #27 from NationalMuseumofDenmark/FrontendSprint2#15771745

Frontend sprint2#15771745
Merge pull request #28 from NationalMuseumofDenmark/master

Update testing with frontend changes; cf. LP#15771745