SB2: proper quark unhide popup positioning.
SB2: fixed SideView quark remove button positioning.
Merge branch 'master' of github.com:0xd34df00d/leechcraft
Revert "SB2: fixed SideView quark remove button positioning."

This reverts commit 2bb63a6e16df9694b1369912087d808639108f84.

The introduced MouseArea breaks access to quarks' own controls exposed
in settings mode.
SB2: fixed highlighting for items being hidden.