Using _.isUndefined.
Made blue header darker.
Fixed bug w/ null value in date and boolean SQL export preview.
Cleanup & bug fixes.
CSS and screenshots of views for the documentation.
Added namespace "ViewAction" + bug fixes to export and filter.
Text edits + added screenshots.
Merge branch 'master' into gh-pages
Version 0.0.4.
Merge branch 'master' into gh-pages