Merge branch 'hotfix' into develop
Added ChoiceValue weights
Add poll title to page title
Print stylesheet started
Deleting votes (only for users that are logged in).
Fix #1869: edit poll after expiration date possible without changing the date
Default locale settings in config.py.example
Fix #1870: expired polls are shown on front page
Do not convert the time of poll choices to local time

All users should see the times in a poll that were
originally entered by its creator. Localizing poll times
by default could lead to confusion if voters come from
different time zones. (Maybe add an option later to enable
localization for specific polls, if desired.)
Fix datepicker layout

The datepicker widget is now always stays top of buttons
Add choice text to summary tooltip
WSGI example file
Fix derp
Fix regexes to actually catch invalid dates and times

Date and time selection without JavaScript is still ugly and buggy.
Maybe we should just disable it completely (or fix it, of course).
WSGI example file
Fix derp
Fixed recent migration for postgresql
Removed sentry setting from default config
Merge branch 'hotfix' into develop
Merge branch 'ghd'