Fix for when GTROOT is within APPROOT (duplicate).
Improve processCopy
Output link & script tags in place of meta tag.
Touch stylefilecache after check
Test removal of meta tags, in the correct place.
Better exception on missing file.
Fix manifest test

Meta tags are removed by FileOrganiser (because of optional DOM Head).
Fix loose typing check
Add data-manifest-ignore check
Simplification of Manifest-related classes
Fix fingerprinting for cache validity of Manifest
Improve cache checking
Implement tests, completing manifest spec.

Asset copying and client-side compilation still WIP.

For #141.
Implement asset copy
Implement asset cache & checks
MAke check for missing asset directory.
Add JShrink minifier.
Merge branch 'daily' of github.com:BrightFlair/PHP.Gt into daily