[PATCH] Increase contrast of water reflections

[aeonios]

Objects reflected in water tend to look washed out and shadows don't show up well, so I added a contrast filter and a saturation adjustment to color correct them.

[OptimusShepard]

Thx for patch. Please upload it to phabricator for reviewing

​https://code.wildfiregames.com/

[aeonios]

Alright this is now on phabricator. I'll post screen shots when I can get that working.

[aeonios]

Updated to account for ​https://code.wildfiregames.com/D1402 and included some minor tweaks.

[OptimusShepard]

Thx for uploading to phabricator. It's not nessesary to update the patches here. The whole programming process is on phabricator. The staffs will take them directly from phabricator when they had accepted the patch. On trac you only mark the ticket as your own, that people see that someone is working on that ticket.

[s0600204]

Hi, we're in feature freeze right now, and this looks to be non-critical. Thus, I'm bumping this back to Alpha 24.

If you feel this is incorrect, and that this change must be included in Alpha 23, please provide your reasoning.

Thank you for your contribution to 0 A.D.!

[Imarok]

Move tickets to their correct component.

[wraitii]

Going to backlog this as r22607 fixed a related issue that makes this less necessary. The code can still be improved graphics-wise, thus not entirely fixing this ticket.