Removing entity selector padding

The default entity selector padding influences the appearance of the entity selector
replacing the native search box which should use the browser's default padding.
If a certain entity selector padding is necessary, it should be set more specifically.
This will probably be referenced when reviewing the css for the statement section.

Change-Id: I2901ee031ff429ce69bb355a6e181043d7853e5c
Merge "Removing entity selector padding"