Added build requirements and known issues
Update README.md

Added Java8/Maven issue
Fixed grammar
added type def to mongo bean constructor definitions
Merge branch 'feat/1731-mongo-log-warnings' into develop
Removed erroneous module
Merge remote-tracking branch 'origin/develop' into feat/1708-paasmigration

Conflicts:
	corelib-solr-dereference/src/main/resources/internal/corelib-solr-dereference-server.xml
	corelib-solr/src/main/resources/internal/corelib-solr-server.xml