Video can now be panned within the resource viewer
VideoResourceViewer now displays a download button where possible
Video element now resizes to the video file's dimensions
Generalized slider styles and moved them to main stylesheet.
Defined method to convert a slider into a vertical one that shows on mouseover
Volume slider is now vertical, and shown above mute button
Fixed volume slider not appearing in the media control panel
Renamed initVerticalSlider() to createVerticalSlider()
Vertical slider DOM is now correctly known as the popup element
createVerticalSlider() now accepts an optional var to add a class to the popup
MediaControls volume popup background follows the rest of the bar
createVerticalSlider() is now part of the sewi global object

All further changes will be in the jurisdiction of the boilerplate branch.
Moved vertical slider specific styles to the main stylesheet
Merge pull request #34 from blackhydrogen/resource-video

Videos can now pan, vertical sliders now supported
ResourceViewer top panel is now smaller