Message Title

Wei Li created an issue

https://trello.com/c/hqdUi6vk/41-authentication-login-screen-as-an-end-user-i-want-a-consistent-screen-across-all-platforms-for-authentication
** Screen Background; ** use the iOS one shown in Slide 7 in the [slideset](https://docs.google.com/presentation/d/1i5mRe2n0PvmhhEZn-_o14g9GVLDzeFiNn7AC8nL1PQQ/edit#slide=id.g3b829bc65e_1_7)
** Authenticate Button Colour; ** Should be the Android Blue/Green, same colour as is used across the headers.
** Authenticate Button Position; ** Should be moved approx 1/3 of way up the screen to avoid it clashing with incoming notifications.

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