Social Activities: more UX improvements: follow popup on users avatar
Merge branch 'master' of github.com:droolsjbpm/kie-wb-common
Social Activities: more UX improvements: when you click on file link, open author perspective in the right point
Merge branch 'master' of github.com:droolsjbpm/kie-wb-common

Conflicts:
	kie-wb-common-screens/kie-wb-common-project-explorer/kie-wb-common-project-explorer-backend/src/main/java/org/kie/workbench/common/screens/explorer/backend/server/ExplorerServiceImpl.java
Social Activities need some Project Explorer modifications related to Rikkola's commit