Remove blockly footer in graph tab
Replaced Run/Stop with Start/Reset
Renamed variables
Merge pull request #311 from virtual-world-framework/blockly-ui-tweaks

Blockly ui tweaks
Makes graph line persist with Blockly window closed and fixes the ability to create equations like y = x / - 2 where - is its own block.

Conflicts:
	source/index.js
Fixed line to be appropriate for view-side.
Fix evaluation when switching between Blockly tabs.