fixed-for-pp25

Actual code used for PP25 PSyChic Challenge.

• added level requirements (points)
• fixed sorting of user's score
• dockerized

v0.2

• new design
• new scoring (points) system
• no longer necessary to do levels in order
• updated for django 1.9

v0.1

This is the first actual release.
Most of the code have been used for multiple large-scale challenges, and are considered stable.

Work done lately includes translations and style (bootstrap).