updates to allow pip packages to install cleanly
Remove all unnecessary files from bokehjs/src/vendor
Merge pull request #1136 from ContinuumIO/mattpap/vendor_cleanup

Remove all unnecessary files from bokehjs/src/vendor
Check for "egg_info" as indication of pip install
Merge pull request #1132 from ContinuumIO/task/setuppy

updates to allow pip packages to install cleanly
update tool hit testing to account for multiple raneges
Merge pull request #1138 from ContinuumIO/hotfix/broken_hoverclick

update tool hit testing to account for multiple raneges
Merging master