Fail build if there are typescript compilation errors (#235)
Fail build if there are typescript compilation errors (#235)

Fixes #232 

Review: da39a3ee5e6b4b0d3255bfef95601890afd80709@adamcw 
labrad/scalabrad-web,labrad/scalabrad-web,labrad/scalabrad-web,labrad/scalabrad-web,labrad/scalabrad-web