Clarify labels on MARC profile pages.

[corylown]

It's not necessarily clear how to read the MARC profile page. Clearer labeling or documentation could help.

Top upper box that lists the field tag, followed by a percentage, and a histogram:
97.82% of records have at least one 950 field.
1,689,930 records have one 950 field
66,657 records have two 950 fields
etc.
The lower box is field centric analysis:
28.094% of 950 fields have at least one subfield c
954,511 950 fields have one subfield c