Merge pull request #30 from kouzelnik/master

Check input
Activate is_safe testing again
Optimize is_safe
Simplify question data file
Fix get_questions
Results view v1
Upload dummy account
Upload dummy account
Graphic update + graph

par grafickych uprav, upraven voting_finish a vlozil sem graf k
vysledkum do administrace, bude to chtit akorat propojit
Fix logic
Merge branch 'master' of ssh://phpvote-phpvote.rhcloud.com/~/git/phpvote
Remove debug code
Merge pull request #31 from chnupal/master

Graphic update + graph
Graphics
Fix lock
Questions list