D-Net

StakeholderController.java & TopicController.java & CategoryController.java & SubCategoryController.java: toggle methods for status and access added.

Indicator.java: [Bug fix]: One extra parenthesis is removed.

1. pom.xml: Add dependency for "uoa-help-texts-library" (will be renamed).
2. UoaMonitorServiceApplication.java: Add @PropertySource path used in dl170.
3. MongoConnection.java: @EnableMongoRepositories not only from: eu.dnetlib.uoamonitorservice.dao, but also: eu.dnetlib.uoahelptexts.dao....

1. IndicatorController.java: Reorder method changed (parameter is List<String> and return value is List<Indicator>).
2. CategoryController.java: Default subcategory has name "Overview", alias "overview" and isDefault is true.

1. Schema changes: Move each entity on its own collection - each entity keeps ids for its sub-entities.
2. New controllers for each entity: TopicController.java, CategoryController.java, SubCategoryController.java, IndicatorController.java.
3. New DAOs for each entity: TopicDAO.java, MongoDBTopicDAO.java, CategoryDAO.java, MongoDBCategoryDAO.java, SubCategoryDAO.java, MongoDBSubCategoryDAO.java....

1. Add IndicatorDAO.java & MongoDBIndicatorDAO.java.
2. StakeholderDAO.java & MongoDBStakeholderDAO.java: Add methods 'findById()' and 'delete()'.
3. Category.java & SubCategory.java & Topic.java: Add fields 'id' and 'isDefault' and getters/setters for 'isDefault'....

1. Stakeholder.java: Create constructor and copy constructor & change getters-setters for 'isDeafult', 'isPublic' and 'isActive' fields.
2. Topic.java: Create constructor and copy constructor & change getters-setters for 'isPublic' and 'isActive' fields.
3. Category.java: Create constructor and copy constructor & change getters-setters for 'isOverview, 'isPublic' and 'isActive' fields & remove field 'description'....

Initial commit for monitor-service.