Made it easier to press the clear button in recents

I set my phone to a low DPI (245); this makes it rather difficult to press the button
The way it is set up now is that you have to press the icon spot-on.
This adds a 10dp padding to make it easier to press for everyone. :)

Change-Id: I0616f14b0ec6203f96d5c9fea8e8303d897d9b66

Conflicts:

	packages/SystemUI/res/layout-land/status_bar_recent_panel.xml
	packages/SystemUI/res/layout-sw720dp-land/status_bar_recent_panel.xml
	packages/SystemUI/res/layout-sw720dp-port/status_bar_recent_panel.xml
	packages/SystemUI/res/layout/status_bar_recent_panel.xml