Swipe tweets to delete on mobile

[dylano]

A swipe left or right should behave just like pressing Remove button

[dylano]

I tried this, on first use I didn't really like it. Reverted to an explicit button instead for now.

Problems were:

• erroneous swipes dismissing tweets when i didn't mean to. should be solved with looking for a greater X delta
• needs a nice animation to slide it away. just disappearing from view is jarring

with these fixes it would probably be a nice addition.

[dylano]

however, swiping doesn't make much sense for the view where you are also displaying the previously Read tweets because you don't want to swipe them away from that view. but then only listening for swipe actions if you are viewing new tweets would be a bit confusing. the explicit button does handle this case well.