appsdk-bump-app-catalog 439 bumping sdk to 1900-a8bccaa

sdk commit: RallySoftware/appsdk@a8bccaaec69c2016f73967bb5210c066e1e10980
author: Stefan Kendall
message: DE18878 - fixed drop down border radius
S63565: Removing kludge needed to keep tests happy while changing appsdk
appsdk-bump-app-catalog 440 bumping sdk to 1901-7d1408d

sdk commit: RallySoftware/appsdk@7d1408da565a9d6c7ac146eafa5d5bf52b603548
author: Stefan Kendall
message: DE20617 - removed unnecessary, exception-causing code
appsdk-bump-app-catalog 441 bumping sdk to 1905-8221c7f

sdk commit: RallySoftware/appsdk@8221c7f59e0769f26e4790ffeab060db678c4390
author: Stefan Kendall
message: DE18934 - fixed field focus issues