[enh] oscar_template: initial osm-map support for map results

* TODO: remove leaflet.min.css if not required
[enh] template_oscar: maxZoom if fitting bounds
[enh] oscar_template: improve result visualisation

* highlight parts of result
* add link to archiv.to
* fix little bugs
* add little icons
* change style of "show map" button
[enh] template_oscar: show addressdata if possible
[enh] template_oscar: add layer to leaflet map
[fix] use address.city if possible
[fix] template_oscar: improve visualisation of video-results
[enh] template_oscar: improve visualisation of torrent results
[fix][template][oscar] print ',' only if postcode is found
Merge pull request #6 from pointhi/template_oscar

[enh] add no-js support
[enh][oscar_template] loading map informations from overpass-api
[enh][translation] update translation files and add german translation
Merge pull request #127 from pointhi/template_oscar_map

Template oscar, add map support