Merge pull request #2 from davidvilla/master

module in the repo too
fixing a problem with annotations: they were wrong
Removing old decorators. Fixing tests. Allowing empty browsers
adding an special browser that can be reused between tests in the same suite. Adding a way to modify the configuration in runtime
using the factory
refactoring
fixing tests
adding widgets for 'a' and 'body'
refactoring widgets
refactoring
heavy refactoring
adding input and textarea widgets
adding forgotten file and license ad
setting the license ad correctly
adding clear method to input widgets
adding some more methods
adding some common methods
integration tests with prego