D-Net

Clean up code use only the method to get managers without session cookie
add more checks if community is enabled for notifications or not

temporal fix for log4j build fail

get managers list: update the methods - add new properties

[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