refactoring in preparation for #3471 (cdmlib-remote-webapp instances can be stopped / started individually)
fixing instance base urls in cdmserver manager and avoiding NPEs in development environments
fixing #2966 (windows installer is no longer being build)
replacing page refresh by ajax status update
fixing absolute urls #3
fixing absolute urls #2
fixing absolute urls
fixing #2638 (cdm-remote instances should be loaded in specified order)
display and calculation of recommended minimum space
updating system requirements
showing the version string in the server management
showing memory usage
fixing #2243 "c3p0 connection pool is loosing connection over night"
new index page and securing only the /manage/ path