prule,daemon,db: Extend database columns and other fixes

Column changes:
* processed and evaluated - converted to integer, 0 means success, >0 means error code
* processtime - timestamp of processing/evaluation
* sockets_real - number of sockets with allocated cores; evaluated in prule from meta data
* state - job state

Old database needs to be converted manually.

rows_to_dict was replaced with builtin row factory, which is faster and does practically the same.

Old job entries will be replaced with new entries on insertion.