Fix #347: make urls from text fields open in new tab

Solution based on http://stackoverflow.com/a/7776635/223267
#370 show correct locality in title on candidate and list pages

(Use RequestContext in polyorg views)
Merge branch 'danielhers-dev' into dev
#324 Add horizontal scrollbar when viewport is too narrow
Merge branch 'dev' of https://github.com/hasadna/open-shot into dev
Merge branch 'dev' of git://github.com/danielhers/open-shot into dev