Show all evidence when more than one piece of evidence is associated with a standard annotation

[krchristie]

@LiNiMGI noticed that that the Standard Annotations editor fails to show all evidence when there is more than one piece of evidence associated with an annotation. It is clearly not a problem with use of the IKR evidence code as I was allowed to add a test annotation (to the term "RNA polymerase II activity") without any problem.

Compare the screenshots of the annotation to "sequence-specific DNA binding" (highlighted in both screenshots below):
In the Form Editor, this annotation is associated with two pieces of evidence:

• IDA = direct assay evidence used in manual assertion
• IKR = phylogenetic determination of loss of key residues evidence used in manual assertion
  In the Standard Annotations editor, only ONE evidence line is associated:
• IDA = direct assay evidence used in manual assertion

I also notice that the Standard Annotations editor does NOT have an option to allow the curator to add additional evidence to the same annotation.

Considering that Noctua has allowed, even encouraged, adding a second piece of evidence to the same annotation for years, I think the best solution would be to add this functionality to the Standard Annotations editor as well. This would certainly produce the best work flow for annotators as it is quicker to add an additional piece of evidence to the same data that is already in the form than to have to reenter all of the information in order to add additional evidence.