Add versions to static page
version of druid-server
server versions with loaded extensions versions
Merge relevant changes from 'druid-version-info'
No need of druid-server.version
removing debug line.
druid-api version not required
Some minor fixes
Code refactoring, one place!
Merge pull request #311 from metamx/versions

Add versions to static page
some spell check fixes for paper
fix figures
update pdf
fix formatting on paper
Merge branch 'master' of github.com:metamx/druid