Allow empty watch div to be skipped
Remove redundant routing entry
Allow all user related urls to be in an instance
Allow multiple base groups in initial permission configuration

Conflicts:
	src/adhocracy/lib/install.py
Allow watch.create without instance join by default
mv notifications from lib.events to model
move migration after rebase
resolve circular imports
add database sink to notification pipeline
define event type mappings
distinguish between event type and notification type
allow different event pager row types
add class ${pager.name}_pager to all named pagers
rename sort_options to autoreload
nicer vote to html
add css [fuzzy]
fixup css
add images
change templates and controller
mv messge function from header to ?