sha,message,author_date,committer_date,raw_author,raw_committer,repo,author,committer
f1c29fd6a184254aa68efadf096bcf21e848f921,"?_col=/?_nocol= to show/hide columns on the table page

Closes #615

* Cog icon for hiding columns
* Show all columns cog menu item
* Do not allow hide column on primary keys
* Allow both ?_col= and ?_nocol=
* De-duplicate if ?_col= passed multiple times
* 400 error if user tries to ?_nocol= a primary key
* Documentation for ?_col= and ?_nocol=",2021-05-27T04:17:43Z,2021-05-27T04:17:43Z,13ae486343ea6454a93114c6f558ffea2f2c6874,cd792325681cbad9f663f2879d8b69f1edbb678f,107914493,9599,19864447