Login process added to the code.

[defstat]

Code added for orcid login process when within Journal context

[asmecher]

@ctgraham, this PR is @defstat's take on login via ORCID. Mind taking a look to see how it compares with your sprint work?

[ctgraham]

The direction aligns well with our approach from the sprint. I'll note some specific comments via code review, but two things I would approach differently:

• The user setting should be scoped by plugin name, e.g.: 'orcidProfile::authId`. Ideally this will also be constructed via a well-known constant so other external authentication plugins act similarly.
• Authentication via lookup by email is a security risk. Our approach in the Sprint was to require an authentication OJS account to explicitly "link" the ORCID login. This is standard practice.