Merge pull request #1 from solros/database_access

replaced std::string by char*
first attempt to retrieve IDs from database
Merge remote-tracking branch 'origin/database_access' into database_access
some not yet functional version to restrict/influence return from database
minor stuff
Merge remote-tracking branch 'upstream/database_access' into database_access

Conflicts:
	polymake.xcconfig
replaced std::string by char*