D-Net

[Trunk | Claims]:
1. db_script.sql: Comment existing commands and add commands for creating metrics table and intialize it with empty values.
2. NotificationHandler.java: [Bug fix] In logger set NotificationHandler.class.
3. QueryGenerator.java: Remove unnecessary log.

[Trunk | Claims Service]:
1. Metrics.java: New entity for Metrics.
2. MetricsHandler.java: Handler for metrics to create queries via QueryGenerator for saving and fetching metrics and execute them.
3. QueryGenerator.java: Queries for metrics added (not all of them are used - created for testing)....

[Trunk | Claims Service]:
1. springContext-claims.properties: Updated "services.claims.mail.openaireCommunityClaimsPage" and "services.claims.mail.manageCommunityUserNotificationsPage" to use the new admin portal urls (Admin portal redesign).
2. EmailSender.java: Build urls by replacing "{community}" with openaire_id in "openaireCommunityClaimsPage" and "manageCommunityUserNotificationsPage" properties, (Admin portal redesign - new urls).

Fix context query (to return claims linked to a community or made in community dashboard)

[Trunk | Claims Service]:
1. ManagerUtils.java: Added method "isCommunityManager()" to check if a user_email is among managers of a community.
2. springContext-claims.xml: Added in bean with id=emailSender, property name="managerUtils" and removed property name="communityUtils".

[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....

- fix order by titles
- context query: get results made in the same dashboard
- add claimed_in_dashboard in the result
- commit changes in Test CopyFromBeta

Query Generator:
context query: link with specific community or claimed in community's dashboard

[Trunk | Claims Service]: readme.txt: [NEW] readme file added, to describe how notifications for community claims are configured.

[Trunk | Claims Service]: EmailSender.java: Remove "beta" prefix from link for community dashboard when sending email notification for community claims.