Improved warning UX for bad asset cases + generated icon#2

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CianNoonan wants to merge 2 commits intophi-lira:masterfrom

CianNoonan:Additional_Config

Commits on May 21, 2020

Improved the warning generation to give more artist friendly info. Also allow textures to now being read even if there is a size mismatch(!)
CianNoonan
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The generated texture is now the icon for the asset as is the case with standard texture assets
CianNoonan
committed