fixed AndroidRuntimeException: requestFeature() must be called before adding content
Remove unecessary glFlush call
Fixing MSBuild path for Content project templates
Fix MSBuild path for ContentBuilder project template
Merge pull request #2801 from mrhlemut/develop

Fixing path for ContentBuilder project templates
Merge pull request #2797 from flyingdevelopmentstudio/FixGLFlush

Remove unecessary glFlush call
Merge pull request #2793 from Andreyul/requestFeature

Fixed AndroidRuntimeException: requestFeature() must be called before adding content
Merge back from develop, removes glFlush in Present()