First version of ASTComparator
Merge branch 'parser' of https://github.com/swp-uebersetzerbau-ss13/fuc into parser

Conflicts:
	code/parser/test/swp_compiler_ss13/fuc/parser/M2CondTest.java
	code/parser/test/swp_compiler_ss13/fuc/parser/M2PrintTest.java
Implemented ASTComparator
Ignored AllTests
Better Exception for missing association Token->Terminal
More testing with ASTComparator and M2 tests
Merge branch 'master' into parser
Fixed M2AssignmentTest
Added M2PrintTest reference AST
Ignored M2PrintTest
+ Fixed size for String declarations
+ Implemented M2 test cases