iOS: fix UI string capitalization

Use book-style capitalization for selection list
items and sentence style for field labels.

Change-Id: I359dc69e22dd1389cc52377e1df3111a243caa58
Reviewed-by: Fawzi Mohamed <fawzi.mohamed@digia.com>
Android: apply UI text guidelines to messages

Do not use "please".
Replace "a image" with "an image".

Change-Id: I32614291b3be4c8a9860ddf8036ef5898bf52ce6
Reviewed-by: Daniel Teske <daniel.teske@digia.com>
Remote Linux: fix UI text capitalization

Use sentence style capitalization for field labels.

Change-Id: I5dc9a408f2f707b7c92a04e4facf494b6d69642f
Reviewed-by: Christian Kandeler <christian.kandeler@digia.com>