removed trailing spaces and tabs from source and text

This commit ignores the “contrib” folder in order to prevent merge conflicts in dependencies, should these be updated via git.

code/PostProcessing/EmbedTexturesProcess.cpp

@@ -137,7 +137,7 @@ bool EmbedTexturesProcess::addTexture(aiScene *pScene, const std::string &path)
     pScene->mTextures = new aiTexture*[pScene->mNumTextures];
     ::memmove(pScene->mTextures, oldTextures, sizeof(aiTexture*) * (pScene->mNumTextures - 1u));
     delete [] oldTextures;
-    
+
     // Add the new texture
     auto pTexture = new aiTexture;
     pTexture->mHeight = 0; // Means that this is still compressed