Finalized layout, now for content
Design tweaks
Adds SFMC to the gliders page
Remove multipoint for urn.* datasets

Removes multipoint features for data points of the form urn.*
Addresses #133, #149
Increased maximum cluster radius

Increased maximum cluster radius to improve stability for some browsers
when large numbers of point clusters are being generated.
Merge pull request #159 from benjwadams/no_multipoint

Change multipoint features to individual points
Merge pull request #156 from ioos/gliders

Adds gliders endpoint
Bring LineStrings to front when selected
Attempt to use axis attributes to determine coords from DAP endpoints
Merge pull request #160 from benjwadams/select_trajectory_to_front

Bring LineStrings to front when selected
Merge pull request #161 from benjwadams/try_axis_attributes

Attempt to use axis attributes to determine coords from DAP endpoints
Fix syntax error
Merge pull request #162 from benjwadams/try_axis_attributes

Fix syntax error
Adds a Download Help Section #78
Merge pull request #164 from lukecampbell/dlhelp

Adds a Download Help Section #78