Chat screen: Tap on clock status bar should scroll you up

[matrixbot]

Created by @ matthew:matrix.org.

Both for history and roomlist

[giomfo]

Agree about room list the issue already exist #125

This issue is renamed to focus on the history use case

[giomfo]

Matthew,

Which behavior is expected when the user taps on clock status bar on history screen?

1 - scroll up to the last read marker
2 - scroll up one page
3 - goes to the top of whatever is buffered

[ara4n]

for now, whatever is buffered