Fix unnecessary separators in login

[Klauswk]

Fix

While on login screen, a few separators were add unnecessary on File and Edit menu.

This changes fix these issue checking if the separator is necessary before adding.

Test

1. Download the Windows and/or Linux builds from CircleCI.
2. Go to login page.
3. Check if the separators are correct.
4. Login.
5. Check if the addicional options are add.

Release

• Fix unnecessary separators in the Electron builds File and Edit menus when not yet logged in.

[sandymcfadden]

Thanks so much for noticing this and submitting a PR to resolve it.
I've left one comment so far on the code.

[sandymcfadden]

This is looking good and tests well.
Thanks again for submitting and making some changes along the way!