Fix: Add 'loading' message to settings page

[boc-the-git]

What type of PR is this?

• bug
• cleanup

What this PR does / why we need it:

Currently when loading the settings, there is just nothing while waiting for the app info to load. The populates a Loading... message.

Which issue(s) this PR fixes:

None.

Notes for Reviewer

The git diff looks to make it fairly hard to compare the actual scope of the change, which was only a few lines. It could be easier to look at the old and new version side by side, or in a better comparison tool.

Testing

[michael-genson]

A couple things:

• Can we add some y padding to bottom to center it in the card? It looks a little crunched.
• Alternatively you might want to use the AppLoader component which gives a nice animation. For example, on the global timeline page:
  

<AppLoader :loading="loading" :waiting-text="$tc('general.loading-events')" />

[boc-the-git]

Good suggestion, I've implemented the AppLoader.

[michael-genson]

LGTM!