Google Play just got updated to version 4.8.20, with a much nicer ui for app permissions.
Here you can see a list of all the permissions app may ask for.
Simplified permissions on Google Play
To help make it easier to understand what an app will have access to, the Play Store has recently made improvements to how permissions are displayed. Permissions are organized into permissions groups, easily identified by icons (example: Location) to help clarify the most important information and capabilities an app can access on your device. This information can help you make an informed decision more easily on whether you would like to install the app.