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7d8dd0d8e3
Why this change? On a slow network, using the `AceEditor` component will result in a blob of text being shown first before being swapped out with the `ace.js` editor after it has completed loading. There is also a problem when setting the theme for the editor which would result in a "flash" as reported in https://github.com/ajaxorg/ace/issues/3286. To avoid this, we need to load the theme js file before displaying the editor. What does this change do? 1. Adds a loading spinner and set the `div.ace` with a `.hidden` class. 2. Once all the relevant scripts and initialization is done, we will then remove the loading spinner and remove `div.ace`.