Fixes #1301 loading status on ncWMS layers
Revert unwanted changes
Use an Ext label (instead of plain Container) so that there is no need to handle/check for rendered status.
Merge pull request #1323 from aodn/issue-1301-using-label

Use an Ext label (instead of plain Container) so that there is no need t...
Merge pull request #1302 from aodn/issue-1301

Loading not updating for ncWMS collections