Fix project dependency conflicts

Resolve https://www.pivotaltracker.com/story/show/57453280

Update project dependencies
Add solr indexer in indexer pluggable webapp
Adding logging for IOExceptions in FileSerializer

Fixes https://www.pivotaltracker.com/story/show/58845340
Merge pull request #12 from futures/file-permissions-bugfix

Adding logging for IOExceptions in FileSerializer
Resolves: https://www.pivotaltracker.com/story/show/58845340