Dim: Change BungieService to use /User/GetCurrentBungieAccount/

[SunburnedGoose]

We need to switch our service methods:

https://github.com/DestinyItemManager/DIM/blob/dev/src/scripts/services/dimBungieService.factory.js#L226

https://github.com/DestinyItemManager/DIM/blob/dev/src/scripts/services/dimBungieService.factory.js#L253

to use the /User/GetCurrentBungieAccount/ bungie endpoint. It has all the data within it.

[SunburnedGoose]

You can compare the endpoint here,
https://destinydevs.github.io/BungieNetPlatform/docs/API-Test?code=b458d207ba6da875f8805938d4c06e5b#/GetCurrentBungieAccount

[SunburnedGoose]

I think this will resolve the errors we've been facing lately that prevent users from loading characters.

[bhollis]

Cool, should be easy to swap

[SunburnedGoose]

Should be faster startup too now that we have all the data in one endpoint and are not searching for gamertags/psdids that change...