Implemented VIR-42 (Add default workflow) with an @OnApplicationStart inside of EmailRuleService.java
+ Added ability to distinguish between a system-installed email workflow rule and a user-created one (isSystem)
+ Added ability to enable/disable Email Workflow Rules (since system-installed ones cannot be removed) (isDisabled)
+ Added UI elements (world or user icons) to distinguish between system and user created email workflow rules
+ Added UI elements (play or pause icons) to allow the administrator to enable and disable email workflow rules
+ Fixed ordering bug with email workflow rules
+ Fixed javascript error that broke functionality s/Alert/clearAlert/g in vireo-settingstab.js