Bump version number to v1.0.4 and upgrade the changelog.
Use promises to smoothly handle exploration loading in the exploration editor page.
Continue tidying up the exploration resource.
Make circles in exploration graph into ellipses. Remove dead code.
Specify only needed JS files in each template view.
Move libs that are only needed by the exploration editor into the exploration editor HTML.
Restructuring the view directories more intuitively.
Ensure that the exploration graph doesn't get cut off by the left edge of the viewing area.
Restructure editor views.
Add a new tab for exploration statistics.
Add missing file from previous commit
Move metadata onto a 'zippy' on the exploration editor page.
Merge branch 'master' of https://code.google.com/p/oppia