[Trunk | Claims Service]:
1. ManagerUtils.java: [NEW] File for getting community managers from registry service added.
2. springContext-claims.properties: Property "services.claims.registryAPIForManagerEmails" added - URL of registry service for requesting community manager emails.
3. springContext-claims.xml: Created bean with id="managerUtils" and property with name="registryAPIForManagerEmails".
a. Autowire ManagerUtils and not CommunityUtils to get community managers from registry service.
b. In method "notificationEmails_For_CommunityClaims()" request managers for each community only once.