Fix the legacy "25, 50, 100, unlimited" Harbormaster log links to respect generation selection
Until it gets replaced, make clicking the "number of lines" elements respect the current "Build Generation" setting. Prior to this change, clicking the links would lose the generation information and jump you to the most recent build generation.
Also fix some collateral damage from T13105 where we ended up with white text on a white background in some cases.
- Restarted a build to get multiple generations.
- On each generation, clicked the various "25", "50", etc., links.
- Saw generation and log window sizes both respected by the links.
Reviewed By: amckinley
Maniphest Tasks: T13120
Differential Revision: https://secure.phabricator.com/D19367