Changed order of sections in Dev Guide  so Code Development is first.
Merge pull request #1399 from pziegfeld/reorder_devGuide

Changed order of sections in Dev Guide  so Code Development is first, then Plugin Guide.
Updated a redirected link to Pivotal Tracker.
Merge pull request #1401 from pziegfeld/july_linkcheck

Updated a redirected link to Pivotal Tracker.
Fixed canvas height from continuously growing.
Everything works.
Merge remote-tracking branch 'upstream/dev' into P48684225
Fixed bug with setting primitive values.