Refactor Acquire Token APIs Internally

[pkanher617]

This PR is to refactor our code for interactive acquire token calls, which will avoid repetition. There are some considerations to make here, including:

• allowing request.account in login calls
• removal of silentLogin
• remove requirement to call login before acquireToken
• acquireToken and loginInProgress call changes

The above changes can come in separate PRs that will be released in a major version, since these will be breaking changes.

Here is a summary of changes in this PR:

• Refactored all interactive calls to a single function
• fixed bug when sending clientId as only scope (?)
• Renamed isCallback function to isStsResponse
• Added new success and error handlers which will handle all interactive errors (will remove the old success handlers for redirect)
• promptUser function renamed to navigateWindow, now takes a popup window, will navigate popups when given a window object
• Moved around functions

[DarylThayil]

what are the breaking changes?

[DarylThayil]

Might be good to schedule some time to go over this as a team, a lot of code changed and hard to ngrok it all

[pkanher617]

what are the breaking changes?

There aren't any breaking changes yet, I should have edited the description. The considerations I have listed would be breaking changes depending on what we decide.

Might be good to schedule some time to go over this as a team, a lot of code changed and hard to ngrok it all

I will throw something on the calendar.

[sameerag]

I am not adding comments as we will go through this tomorrow in the review meetup. We need to follow this up with:

1. The much-needed split of UserAgentApplication.ts file as sectioned already
2. Break large functions in UAA to smaller ones (saveHashToken, processCallBack etc ...)

I know you are working on some PRs regarding this, I can help too, let me know and we can split up.

[pkanher617]

isCallback is a breaking change

[sameerag]

Me and @pkanher617 synced up offline and closed most review comments/follow-ups I had. We also created more internal PRs for future work to track some changes we wanted to get in later. I want to do a quick peek for a few more changes and will approve tomorrow.

[DarylThayil]

lgtm, feel free to merge when you close with others on their open questions / get another approval