Upgrade to new versions of deps
Revert closure compiler version update.

The version upgrade of the closure compiler was reverted because of some
extra dependencies on org.json than previously existed. The other
changes related to it are still valid and are needed if we ever upgrade
in the future.
Re-architect CSS plugin to eliminate waiting queue
Revert changes associated with closure compiler upgrade.
Merge pull request #213 from chuckdumont/master

Re-architect CSS plugin to eliminate waiting queue
Remove JSSourceFile -> SourceFile changes.
Revert change related to org.json api usage.
Merge pull request #212 from ddumontatibm/dependencies

Update Dependencies
Non-aggregated resources handling fixes
Merge remote-tracking branch 'openntf/master'
Add example mime.types to sample app
Merge pull request #214 from chuckdumont/master

 Non-aggregated resources handling fixes
Use both MimetypeFileTypeMap and FileNameMap (from URLConnection) to get
content type
Merge pull request #215 from chuckdumont/master

Use both MimetypeFileTypeMap and FileNameMap (from URLConnection) to get
Fix issues with NIOFileResource and symbolic links
Merge pull request #216 from chuckdumont/master

Fix issues with NIOFileResource and symbolic links
Make DependenciesImpl.processDeps protected so subclasses can override.
Merge pull request #218 from chuckdumont/master

Make DependenciesImpl.processDeps protected so subclasses can override.
Merge remote-tracking branch 'openntf/master' into test