add the possibility to collect data about the behavior of users
while looking at proposals and their comments, a prerequisite to fixing
hhucn/adhocracy#115
 - introduced a 'stats' controller to be used to collect various usage
   statistics to be used by this feature as well as future extensions
   (e.g. hhucn/adhocracy#167)
 - added an option 'adhocracy.monitor_comment_behavior' to control
   whether stats about comments should be collected
 - added background requests that are triggered iff the option is set
   and a user either scrolls or opens 2nd-level comments; for data to be
   collected, 'adhocracy.requestlog_active' must be set to True
add documentation to stats controller
insert space after if
remove return value from event handler
Remove invalid HTML (<a> without href or name) in badge template
Correct rendering of invisible badges
Fix display logic of instance details (hhucn/adhocracy.hhu_theme#165)
Merge pull request #265 from wawe/feature-comment-behavior-monitoring

Add the possibility to collect data about the behavior of users when viewing comments
Simplify comment monitoring
Add CSRF tokens in badge edit forms (Fixes #268)
Remove superfluous debugging output.
Instead, we can wrap render in general.
Fix adhocracy project link in footer

Point to github page, as code.adhocracy.de is broken due to certificate
problems.
Adjust instance creation UI to protocol and relative_urls setting
Correct focus and tabbing in new entity forms

* Remove use of tabindex entirely, as the specified numbers were
outdated, and explicit declaration isn't needed anyway
* Use HTML5 autofocus attribute
Removed unused milestone list from frontpage context
Allow to show newest proposals on startpage

This is currently only used in the default geo branch templates.
Merge branch 'develop' into geo
Force scale line a bit to the right

in order to avoid a collision.