Edit House Meeting Attendance

When choosing a date to submit house meeting attendance we should check for a previously submitted meeting and display the submitted results in the table. This should allow for the evaluations director to modify the attendance for that meeting.

No file or test is named. Start by locating the date-selection and attendance-submission entry points, then trace how meeting results are loaded into the table. Done means selecting a previously submitted date displays its results and allows the evaluations director to modify and resubmit the attendance.

Written by the indexing model from the issue text.