bridge/appsdk-bump-app-catalog 1151 bumping sdk to almci-master-4247-eb7c888
bridge/appsdk-bump-app-catalog 1151 bumping sdk to almci-master-4247-eb7c888

sdk commit: RallySoftware/appsdk@18a1c0fe286561005c54028b873bbcfa5028291b
author: Nick Gibson and Ben Wittenberg
message: DE25943: Fixed issue where attachment request would attempt to use null

sdk commit: RallySoftware/appsdk@203a3dde7914420791248be407934091cc3dbbc1
author: Hudson
message: Release v2.0.259

sdk commit: RallySoftware/appsdk@eb7c88817719114bd487cfe8b0febd7bcfd2e4d5
author: Hudson
message: Release v2.0.260

RallyApps/app-catalog,wrackzone/app-catalog,RallyApps/app-catalog,kcorkan/app-catalog,kcorkan/app-catalog,wrackzone/app-catalog,kcorkan/app-catalog,wrackzone/app-catalog,RallyApps/app-catalog