Added Java after oh-so-many years
Forgot files for java
Fixes for java
Release java to public

Summary: Removed old linter from InfoarenaLinter

Test Plan: nothing

Subscribers: echipa-infoarena

Differential Revision: https://hackers.infoarena.ro/D28
Liveeval

Test Plan: Go to /liveeval?rounds=round1|round2|...|roundn and press the magic button

Subscribers: echipa-infoarena

Differential Revision: https://hackers.infoarena.ro/D29
Uncommittable hacks from live.