CFY-1473 wrap user exceptions with Recoverable,NonRecoverable Errors
CFY-1473 revert accidentale change
CFY-1473 add de-serialization exception to the message of a failed task
CFY-1473 fix type format
Merge pull request #76 from cloudify-cosmo/CFY-1473-user-exceptions

Cfy 1473 user exceptions
CFY-1473 dont do user exception conversions in case of a local task
Merge pull request #75 from codilime/failure_healing_policies

Failure healing policies
Merge branch 'master' into failure_healing_policies
Merge pull request #77 from cloudify-cosmo/failure_healing_policies

Failure healing policies