minor gui glitches

[taurus]

Little notes about usage of v2:

• when auto-refresh is turned on, even changes in postprocessing values like brightness, contrast, gamma lead to an instant re-render. I think that's not useful.
• when connection between resolution and detail level is active, the resolution buttons act strange. I had several issues like a change of aspect ratio or false doubleing. A reproducible example: turn the detail level to 2 @ 1280x720 (connection activated) then try a 4k resolution of 3840x2160 with fixed 16:9 aspect. It leads to 3839x2159. Only with free aspect you can adjust the right resolution. I assume this is unwanted.

[Buddhi]

Thanks for reporting these problems. I will fix them.
I have added them to issues list: https://github.com/buddhi1980/mandelbulber2/issues

[taurus]

Thanks Buddhi, I'll try to keep the adress in mind.