Further work in 'lax mode'

I have executed all 1708 tests and made a first pass at recording the known issues. I have also made quite a few changes to the 'lax mode' path expressions. It is going to take a few iterations to find the expressions that work for all the different apps!

I have also temporarily disabled the persistence test, it fails intermitently at the moment.
Merge pull request #821 from ColinEberhardt/improved-test-clarity2

Further work in 'lax mode'