Create action box

We need an additional Box element: "Action Box".

Same TCA as "Info Box", except:

• Text length in RTE is limited to 200 signs
• Links are forbidden in RTE
• option "Box can be highlighted on hover in orange (see example at the left side)"
• option "show box in orange" (see example at the left side)
• option "show box in white" - no highlighting (see example at the left side)