v4.7.43 — Semester/Term/Unit/Monthly Relabel

Relabeled the "Semester" field to "Semester/Term/Unit/Monthly" throughout (admin entry form, Result Manager listing, frontend search form and results, validation message, CSV format description) so institutes using term-, unit-, or monthly-based academic periods aren't stuck with semester-specific wording. The field itself is unchanged — still free text, same stored data, same CSV column position, same shortcode search parameter — only the label text changed.

Full Changelog: v4.7.42...v4.7.43