Improving more projects link in context selection

The existing icon is a cog which implies making a settings change.
Changing to a list icon to match more closely what is achieved by
the link.

Also, adding the icon to the link rather than having it separate,
this is more consistent with the rest of the UI.

Closes-Bug: #1398515
Change-Id: I10c998c939d47b0a8ef6bbd13c66bddcba12b14b
Merge "Improving more projects link in context selection"