Failing test for alpha numeric variable value
Created unit test for the default one week expiry header for the CachedCssResponse
Added configuration property for how far in the future that the expires header should be set
renamed the configuration property for the expiry header length to make it more obvious what it is for
Merge remote-tracking branch 'issue-368/alpha-numeric-dom-id-variable'
Fixed #368 - space rendered in a variable result. Fixed it by expanding the Keyword parser to also accept numbers.
Added data-uri function to inline resources in CSS files