improve some error handling
stray debugging code
remove trailing commas in jbrowse_conf.json
smooth over html-layout percentage inaccuracies in Safari (and probably other browsers) by forcing rubber-band zooms to use one of the pre-defined zoom levels
bugfixes for IE 8 support
improve phrasing of error messages when browsers do not support typed arrays
port CanvasFeatures track base class to use the new JBrowse/has
more fixes for old IE
add a reject callback to namestore lookups
fixes for IE 7
more IE7 fixes
update release notes for IE fixes, references #236
just include the full set of sample_data in the minimal release
release 1.9.0
fix wiggle track log-scale display of negative values. fixes #244
fix right-click menu regression
another small fix for IE 7
tweak release note wording
Revert "slow down query typing in selenium tests, selenium API seems to have sped up quite a bit recently"

This reverts commit 0c9ca6d6473ed7e21679e955acea5438d881a4a3.
remove vestigial code from selenium tests