Squashed commits:
[aecb167] removed old group settings screen
[2fec747] common components in new chat screen
[718e445] small fixes (+1 squashed commit)
Squashed commits:
[4a9be3c] rebase (+1 squashed commit)
Squashed commits:
[ef4f140] clear code, refactored groups using common components, moved styles from platform using defstyle macro (+1 squashed commit)
Squashed commits:
[b1ddb03] ns fixes (+2 squashed commits)
Squashed commits:
[236ec35] moved toggle contact item to components
[42e0aa9] implemented list-separator, list-footer, list-header, renderers, contact-list-item, removed unused code