Loan history: header row cells not in alignment with table

(Overview: Table header and rows are out of alignment in users’ open and closed loans.

Steps to reproduce

1. Log into snapshot-stable as diku_admin
2. Click Users
3. Find a user with at least one open and closed loan (or check out items and check them in to demonstrate)
4. View user’s closed and open loans with all columns selected

Expected results: Column names and column contents are left-aligned and the contents of each column are aligned with the header

Actual results: For the columns Item title through Fee/fine, the contents are aligned with the left of the header. After that, the column contents and header are out of alignment. Deselecting and re-selecting columns also alters the alignment:

• Deselecting fee/fine appears to correctly align policies
• Deselecting contributors, renewal count, loan policy, location and loan date, then re-selecting loan policy and renewal count (in that order) also upsets the alignment of those columns.

(I haven’t tested all configurations of de-selecting and re-selecting columns - I’m sure there are other ways to change how well these headers and columns match up.)