- redundant method call
- adding constants
- parsing values
-  UnityAds iOS does not refresh ads

done
Merge branch 'ad-plan-refresh' of https://github.com/Applifier/unity-ads into network-selection-rewrite

Conflicts:
	ios/UnityAds/UnityAds.m
	ios/UnityAds/UnityAdsProperties/UnityAdsProperties.h