QSObject identifier and indexing

When contributing to the Quicksilver catalog you must set the identifier for the QSObject if you want it to maintain the default value and ranking information. This makes sense but there was an issue in 0.9.1 of qseclipse because I wasn't doing this. Apparently the equality algorithm takes this into consideration when determining object equality. Version 0.9.2a contains this fix. Workspace and workspace log catalog entries now retain this information across indexing operations.