statistik aktueller zeitraum

issue #9
statistik aktueller monat

#9
statistik letzter monat

#9
hide wages if evaluator

#9
glyphicons

#9
fix

#9
new model: showstats
finished feature statistics

fixed #9
code improvements

#9
small fix
keep it general...

#9
Merge branch 'issue_27_popovers-on-reports' into staging
Merge branch 'issue_09_statistik' into staging