DMG deployment

Updates to application/pom.xml to create DMG and app bundle
Moving osx reousrces to application/src/main/osx
Revised installer build and deployment

Builds OS X app bundle, DMG creation, and deployment in profies
Update site upload in profile
Linux and Windows installers built and deployed via -Pdeployment profile
Separates update repository

Updates to updates/ovation
Adds deploy installers profile

Separates zip and installers build, so that we don't have to build
installers on every -Pdeployment
Always build zip