Added microphone to manifest as uses-feature
Try to recover from loading errors during playback (rather than exiting)
Load the picture before stopping icon rotation
Increased default border width to make it visible on low-end devices
Treat the audio icon in the same way as other images
Changed 'I' to 'We' in helper narrative
Added a note about an issue with SD card being present

The current code has a bug if no SD card is present - at the moment
this shows a toast on every activity switch. This update disables the
toast temporarily, but the underlying issue still needs to be addressed.