AST node for expression
AST node for statement
evaluate interpreter on multiply
auto formatting of xml file
renamed app in manifest
fixed edit text in list view issues
fixed empty string value setting to int and missing isCompatibleToInt declaration
formatting
renaming servlet classes
everything finished. added xml generation, minor refactoring overall
merge
forgot some files, removed unused CSV library jar
Final touches

- Help
- Javadoc
- Save option
- Some tests
Merge branch 'master' of https://github.com/software-engineering-amsterdam/sea-of-ql
introduce Value and initial implementation for add
Fix expression test
removed un-used evaluator visitor
externalized some strings
fixed type checker issue on add expression
moved the interface for the parser service