How do I change the IDE to a different IDE such as VS 2013 community?
When you generate Visual Studio solution files for a UE4 project it is actually set up to use Unreal Engine’s own compiler tools, UnrealHeaderTool and UnrealBuildTool. You should use these. Are you running into any issues?
Do you mean changing the IDE from VS Express or VS Professional to VS Community? Not sure if there’s a default settings that you can change so it always open VS Community.