fix(create-recordings): add error-views and refactor target listener

[tthvo]

Fixed #673
Fixed #686

The following fixes were applied:

• Add a missing error view to CustomRecordingForm.
• Add a missing error view to SnapShotRecordingForm (only auth failure and ssl error will show).
• Refactor target selection listener of CustomRecordingForm to update UI when the target selection is changed.

Others:

• Add unit tests for SnapShotRecordingForm.

[tthvo]

Error handler for SnapShotRecordingForm is a little complex:

• Must add listener for authRetry to update form because failed api requests from custom recording tab also trigger any listener for authFailure and valid credentials do not update snapshot tab because it originates from custom recording tab.
• Must add listener for sslFailure because context.api.createRecording only returns true/false. Other errors are shown through notification messages.
• Must add listener for context.target.target to reset form if the target selection is changed.

[maxcao13]

Nice, I like the changes, great job!

[tthvo]

Ohh thanks! Looking back again at CustomRecordingForm, I think having 2 independent api calls for recording form data (i.e. template dropdown and recordingOptions) might cause an issue if only 1 call fails (i.e the result of the api request that comes later will decide if the error view should be shown).

To tackle this, I added a small fix with forkJoin that avoid above issues :D However, this means only the first error will be reported on screen if both api calls throw.

You can review again^^

[andrewazores]

Looks good, just rebase to resolve the conflict please.