Working "for"
Semi-working pre\post increment\decrement.

Not working:
- expression as statement: result++;
- returning of increment\decrement: return result++;
"int a = 0" seems working
fix indents in for
Merge branch 'hpotter' into marina

Conflicts:
	mini-java-master/project/Lexical.cpp
	mini-java-master/project/PrettyPrintVisitor.h
	mini-java-master/project/SymbolTable.h
	mini-java-master/project/Translator.cpp
	mini-java-master/project/Translator.h
	mini-java-master/project/TypeCheckerVisitor.h
	mini-java-master/project/interface.h
	mini-java-master/project/syntax.txt
Some bugfixes in indents