First shot at generating json for grid.
load a CZML file by default
Adjust dependencies, define CZML MIME type.
Whitespace fix.
Update Cesium.
Fix merge problem and filter out requirejs
Data grid with search
Refactor ISS/photo CZML loading
Generate ISS CZML files.
Merge remote-tracking branch 'remotes/origin/master' into gridUI

Conflicts:
	index.html
moved extjs
Fix missions.json
Don't be a jackass, attempt 2
Refactor ISS/photo CZML loading
Generate ISS CZML files.
Fix missions.json
added datagrid source
Merge remote-tracking branch 'remotes/origin/master' into gridUI

Conflicts:
	Assets/missions.json
refactor CZML loading, fix #15.
Added AGI logo