Merge pull request #259 from mvexel/master

two hotfixes
Merge pull request #261 from mvexel/master

update requirements to Flask-Admin 1.0.8 because 1.0.7 breaks when WTFor...
Merge pull request #265 from mvexel/master

Statistics rework
Merge remote-tracking branch 'upstream/master'
add IP whitelist to local endpoints