Multiple fixes for stability
 - Adding option to prevent rollback in case of successful execution of a destructive operation that is not reversible (deleting gear or deconfiguring cartridge on the node)
 - Checking for the existence of the application after obtaining the lock
 - Reloading the application after acquiring the lock to reflect any changes made by the previous operation holding the lock
 - Using regular run_jobs code in clear-pending-ops script
 - Handling DocumentNotFound exception in clear-pending-ops script if the application is deleted
Checking for empty string in ObjectId
Deleting applications on app creation rollbacks
Merge pull request #4840 from abhgupta/abhgupta-dev

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Removing f19 logic
Merge pull request #4918 from danmcp/master

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Create less apps in tests
Merge pull request #4919 from danmcp/master

Merged by openshift-bot
Make nodejs watch just a single file by default instead of REPO_DIR
Refactor the way how we check if compilation of assets is necessary (ruby)
Merge pull request #4904 from mfojtik/card_156

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Merge pull request #4905 from mfojtik/card_151

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add jython to jboss cartridges
Bug 1073934 - Check the ERB safe-level for python openshift.conf.erb
Merge pull request #4920 from maxamillion/maxamillion/add_jython

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Merge pull request #4922 from mfojtik/bugzilla/1073934

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