Merge \"Add redirect for new Run/Debug Config doc b/29615014\" into nyc-dev

- from: /r/studio-ui/avd-manager.html

  to: /studio/run/managing-avds.html

- from: /r/studio-ui/rundebugconfig.html

  to: /studio/run/index.html

  to: /studio/run/rundebugconfig.html

- from: /r/studio-ui/devicechooser.html

  to: /studio/run/emulator.html

- from: /r/studio-ui/virtualdeviceconfig.html