Do auth while loading

[NunoDasNeves]

I noticed app load still looks very ugly due to checkAuth blocking the router and therefore stopping the main routerview showing anything, and the buttons in the nav changing while the page is loading.
So I added startLoad and endLoad to checkAuth and now it's all hidden! yay?

[coveralls]

Pull Request Test Coverage Report for Build 1683

• 0 of 0 changed or added relevant lines in 0 files are covered.
• No unchanged relevant lines lost coverage.
• Overall coverage remained the same at 86.228%

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Totals
Change from base Build 1681:	0.0%
Covered Lines:	680
Relevant Lines:	740

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💛 - Coveralls

[DarkPurple141]

Interesting, now wondering whether having the render-blocking auth check is needed now as it'll be resolved behind the loader any way?

[NunoDasNeves]

@DarkPurple141 #shell just (visually) covers #app while loading right?
In this case we do still need the authCV, cos it's purpose is actually to block further requests from going out until checkAuth resolves (specifically, GET requests that return stuff dependent on the auth token)