improved status msg for autocompletion fetches
#141 refactored properties fetcher to support fetching classes as well
#141 fixed refactoring of server-side autocompletion code to easily port to class autocompletion
fixed typo in 'compatAbilities' references
removed obsolete code (code for our previous property autocomplete attempt, which kept all autocompletions in memory
 #141 refactored client-side for easier porting to class autocompletion
#141 now use proper enum db values for 'Method' columns