Add home-button properties to index_template and readme
ignore smylink to smartgraphs project.
downnload_activities.py:  copy activities specified in menu/source.html  to smartgraphs/app/activity_json
Update documentation with information about how to download activity json.
rm hard-coded proj from copy-image script, get name from config.xml
Download activities -- use index.source_html as source. Relative paths.
Script to build the sprout core app.
Mention possibly building SmartGraphs using ./build_sproutcore.sh
remove old images, and fix relative path of cached images.
Handle cases where activity URL, activity name, and internal name vary.
Fix TextArea scroll bug

1. Make device not render in fullscreen.

2. Add a focus listener to all textareas to make them call
scrollIntoView 500 ms after focus or keypress. (Listeners are
added after each page load using window.MutationObserver.)
Merge branch 'master' into african-lions

Conflicts:
	hooks/after_prepare/copy_images.js