qtgui agent injector: enable/disable inject/remove buttons as appropriate
qtgui agent injector: enable/disable inject/remove buttons as appropriate

ccdevnet/openc2e,crystalline/openc2e,ccdevnet/openc2e,crystalline/openc2e,crystalline/openc2e,ccdevnet/openc2e,ccdevnet/openc2e,bdonlan/openc2e,bdonlan/openc2e,bdonlan/openc2e,bdonlan/openc2e,crystalline/openc2e,ccdevnet/openc2e,ccdevnet/openc2e,crystalline/openc2e