Fix UI scaling issue

[MaximeBrean]

This PR fix mission control layout and tracking station button that doesn't respect UI scaling setting.

Tested with UI scaling ranging from 80% to 200%.

[siimav]

Does this fix #40?

[MaximeBrean]

Yes it does.

[MaximeBrean]

Hi, I responded quite in hurry, sorry.
All calls now use the second SetParent parameter. See https://docs.unity3d.com/6000.1/Documentation/ScriptReference/Transform.SetParent.html for more details. While not clearly stated, when used on 2D elements (at least, how they are used in KSP), this allow for parent's scaling inheritance when set to false.

While beyond my understanding in the grand scheme of things (I'm a newbie in Unity) it behave as intended as it's using parent's scaling (without any kind or UI reload or game restart).

You can compare behavior between unpatched DLL and patched DLL.

With unpatched version, icons in the planetarium stand out from other filtering icons (bigger when using bellow 100% scaling, smaller using above 100%) with comsat button control overlapping them (hence the change in its ofset).
List sub-items in the mission control view will shift to the left when using bellow 100% scaling up to being hidden by the stock UI. With scaling above 100%, the same happen with the subitems shifted to the right.

The fix now use parents scaling without changing any offset previously shipped in the mod, just making sure that they are scaled to whatever is the chosen scaling (by inheriting parents -stock ui- scaling).

PS: sorry for any bad wording, English isn't my main language.