Removed dependency
Removed dependency

Removed dependency to resolve missing migration on last FIR version (Error message:  django.db.migrations.exceptions.NodeNotFoundError: Migration fir_tagartifact.0001_initial dependencies reference nonexistent parent node (u'incidents', u'0005_auto_20150525_1551'))
gcrahay/fir_tagartifact_plugin,gcrahay/fir_tagartifact_plugin,gcrahay/fir_tagartifact_plugin