code-dot-org/blockly — pull request #509 by bcjordan (2014-04-21 23:21:41+00:00)
Title: Do not display level instructions when blank [finishes #69297026]

For now, assume a blank instructions template means it should not be shown.

Before (hypothetical level with blank instructions):

![image](https://cloud.githubusercontent.com/assets/206973/2759995/5fc55986-c9ab-11e3-9220-b618afee5355.png)

After (screen not shown)