Minor layout fixes
user manual: reorganize files.
README: update license, use EUPL v1.1
README: update production instructions, add a supervisord.conf example
Add a vhost.conf example for http
user manual: add images for user/view.rst.
README: update admin user creation section.
wiki: do not allow comments for readonly datasets
conclusions: do not add comments for readonly datasets
docs: update conclusions initial paragraph.
docs: update assessment initial paragraph.
history: include period in link to summary
wiki: should not fail when no dataset is provided
summary: should not fail when using period from defaults, not the request url
comments: fix a bug with unread counts, invalid values displayed
docs: update conclusions with please_select_bioregion instructions.
user manual: data sheet info
db: alter etc_dic_hd_habitats, enlarge name to 255
wording: remove registration paragraph on homepage if start_date is not set.
update README