GXT 101 - Using the Compiler to build

- Compile into the war
- Use -compileReport to narrow down the builds
- Use -setProperty to build one permutation
- Incrementally compile for debugging
- Run a web server and test it

Permutations and Properities:
http://docs.sencha.com/gxt/4.x/guides/gwt/Permutations.html

Compiler Options:
http://gwt-plugins.github.io/documentation/gwt/launchers/Compiler.html