PDI-10909 - Email message input: retrive the first ... emails

junit tests added
PDI-10909 - Email message input: retrive the first ... emails

Fix added. 
Retrieve first ... emails will be applied only if folder is non dynamic
Limit value overrides retrieve first ... emails value
Merge pull request #214 from prakapenka/PDI-10909

PDI-10909 - Email message input: retrive the first ... emails