fix permission access: display news to ppl with correct rights
Merge branch '6.1'
News: don't link to nonexistent forums If the news-related forum has been deleted but the news still exists, then display the news but don't link to the forum to avoid a broken link.
remove useless function. just use HTML->footer() directly
headline news: add missing crossref
fix css handling with flex display
use constant GROUP_IS_NEWS when needed rather than calling forge_get_config function each time
homogeneous display in widgets when no data found.
space
fix HTML syntax. No div in em.
PHP Doc
use util_display_user in news
remove obsolete type_id on group object
remove dead code
Whitespace
Remove unused variable
Add default value 'array()' for footer functions
Less strings
No nbsp
Update PHP Doc