Add a 'refresh' button 

Similar to mostr, I'd like jasmine to run tests in a loop.

This adds a 'refresh' button and relevant unit tests.

Functionality:
Jasmine reruns all tests in a loop with a 10 second pause, until the button is unchecked.  

Flag composes with the 'spec' and 'raise' flags so that you can loop on one test suite

This pull request additionally addresses:
1) A TODO in the code, by inverting the meaning of the 'raise exception' variable
2) Issue #399