* re #168, add totalsize to response from API, add loader to asset list, add totalsize to asset list ui
* re #168, add totalsize to response from API, add loader to asset list, add totalsize to asset list ui
* update asset list copy to remove limit, since that's not implemented yet
* start to create asset list
* begin refactoring overlay component to remove duplicate code
* refactoring of overlays, asset list styles
* changes to add size to asset list
* fixes to asset list
* handle case in which a user hasn't uploaded any assets
* fix bug in which asset list only grabbed first asset
* remove console.log
* update overlay exit styling to use icon mixin