groups in table: more detailed DELETE (subform params) and convert old POST method to PUT (for symmetry) (all params are in url)

Conflicts:
	templates/pages/projects/project.html

annotations: add possibility to overhighlight a maplist term via route projects/1/corpora/81/documents/83/focus=2677 where 2677 is the id of the term to highlight

annotations: filter map from main at initial transmission to avoid interference of the 2 context menus

annotations: working delete from lists (added "ngramlists/change?list=..." as an external service + added chained calls to manage consequences)

api/ngrams/: add ngram_id request possibility (like api/ngrams/?ngram_id=1,2) and ngram_id in output