Updated documentation of InternalPython

and pass file descriptor for stderr to the function
Avoid precision errors when comparing with expected score
Could not add list to tuple...
Convert to string before outputting
Warn if a test case has not been checked
Checkutil: Enhance error messages
By default, a contest has token mode 'no-tokens'
Add per_user_time option to ContestConfig

(for USACO mode)
Use c++11 by default to compile cpp submissions
slightly improved quality of lg-logo
Added asymptote and latexmk to requirements
uniinput
Merge remote-tracking branch 'mist/master' into germany-master