Renamed QuickCheck to Test everywhere, since QuickCheck isn’t even used in the automated testing module.

- Removed the eval tests.
- Added tests for QuickCheck
- Note that something is broken: multiple tests fail.

- wrote a function in SimpleFormulaChecker.hs that can be used to evaluate (for now just preconditions) in java files;
- wrote some (for now) very basic tests for LExpr eval;
- worked on QuickCheck.hs, but I have some ideas (mainly regarding arrays) that I need to discuss before I proceed;
- added extra parentheses in Pretty.hs to make debugging the AST easier.

* LogicIR EDSL.
* Minimized LogicIR.
* General styling fixes.
* Supressed output in tests.
* Single-threaded test execution.