include ORCID ids if missing for one or more authors

[thearagon]

current way to handle ORCID IDs: look for TeX macros sequentially and assign to authors in the sequential order. If the ID for one author is missing, it messes up the ordering and therefore ORCID IDs are not printed.

solution: get the ORCID macro that is within the author macro, assign each ORCID IDs to their authors.