ios: improve run handling

disabling running when running is not possible with message explaining
it:
* device is not available (and tell user if another device is available)
* profile parsings

Change-Id: I8a2e8e4486555b09de2ac4ceab89997286c81454
Reviewed-by: Daniel Teske <daniel.teske@digia.com>
Reviewed-by: Leena Miettinen <riitta-leena.miettinen@digia.com>