removing bundlePath tag handler in favour of a new base tag
adding unused imports
changing the model so URLs work with the new base tag
renaming app 'meta' plugins and their packages
changing app metadata to serve correct meta data
adding appmeta service that replaces appversion and bundlepath service and which uses the new bundle paths generated by the model
allowing unbundled-resources content plugin to handle unversioned requests and removing the need for the /static for unversioned requests
tidying up formatting for test
Merge pull request #855 from BladeRunnerJS/adding-base-tag

Adding base tag plugin and changing relative bundle paths