Notifications: fix validate template message

- deleted processing message while validation
- method do not need to process the message, since there is no syntax
  checking and it only writes unnecessary exceptions in the log
Notifications:set default locale for notifications

- in case of unrecognition of locale during sending message, the module
  tries to send the message at least in default language (english for
now)
Notifications+RPC: fixed wrong usage behavior

- checking template existence when creating new receiver (java)
- checking template, target and locale option existence when creating new receiver (perl)
- checking primary properties when creating/updating new template
Allow engine to read assigned resources

Add engine to the list of roles allowed to call getAssignedResources()
and getAllowedResources() in ResourcesManager and ServicesManager
Merge pull request #594 from jirmauritz/notification

Notifications: set default locale and fixed behavior to wrong usage