Merge pull request #470 from jeremygray/master

Keyboard component 'escape', default duration
FF: simplified 916ac6c81aa

During experiment.py we don't need to do a second event.getKeys()
ESCAPE="escape" in constants is unecessary complication
BF: Builder image component: flipHoriz and flipVert parameters were missing in writeInitCode function
Merge pull request #473 from frankpapenmeier/master

BF: Builder image component: flipHoriz and flipVert parameters were miss...
Merge pull request #472 from jeremygray/master

ENH: allow control over height of RatingScale tickmarks
ENH: Builder code comp open to first non-blank page

I love the tabs!
- now code comp opens to first non-blank flatnotebook page
- larger text area for rating-scale customize-everything box