Merge query-by-number and multi-field query forms.
This work included:

• move a few functions out of query-pr-summary.cgi into a new file - query-pr-lib.pl, which now provides a procedure to display forms
• include query-pr-lib.pl in both query-pr.cgi and query-pr-summary.cgi scripts

PR: www/35647
Approved by: trhodes (mentor), keramida (mentor)
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