cleanups from /me pull request
cleanups from /me pull request

 * validate string inputs to chat message
 * fix unnecessary if statements since we use curlydiff now which
   automatically avoids sending unnecessary nulls and undefineds
 * fix syntax error

dwrensha/groovebasin,CalebMorris/groovebasin,andrewrk/groovebasin,emersion/groovebasin,dwrensha/groovebasin,dwrensha/groovebasin,melissanoelle/groovebasin,CalebMorris/groovebasin,neynah/groovebasin,sammcj/groovebasin,andrewrk/groovebasin,emersion/groovebasin,melissanoelle/groovebasin,andrewrk/groovebasin,gorlug/groovebasin,Qbuer/groovebasin,sammcj/groovebasin,neynah/groovebasin,dwrensha/groovebasin,sammcj/groovebasin,neynah/groovebasin,melissanoelle/groovebasin,emersion/groovebasin,gorlug/groovebasin,Qbuer/groovebasin,CalebMorris/groovebasin,gorlug/groovebasin,Qbuer/groovebasin