Merge pull request #2 from keeeeenw/master

First Database Design 2
Added new constructors for the domain model
Added some unit tests
Merge pull request #3 from keeeeenw/master

Added Domain model constructors and unit Tests
Worked with the unit testing for InterestTests.
Merge branch 'master' of https://github.com/shilad/context-sensitive-sr into upstream
Added grails-friendly git ignore
Removed plugin iml