Avoid null in dynamic values strings
Added event notification enums description
Only public methods are defined in interface
Added MetadataEventNotifications, ContentDistributionEventNotifications
Load KalturaMetadataFieldChangedCondition according to condition type
New condition type KalturaMetadataFieldChangedCondition
kEventFieldCondition is new type of generic condition
Expand EventNotificationEventObjectType
Limit admin console UI to update action only
Create http notification template on shared partner