switch to grunt build tool

- remove ant
- add grunt and npm modules
- update gitignore (node_modules ignored)
rename script

rename from jquery.forces.relevance to jquery.relevance
setup testing

- split html and js test files
- jshint all test files
jshint fixes

- whitespace
- removed unused variable
qunit tests pass

fix links to src javascript
fix uglify

fix file name reference for uglify