Issue #222: Move Layout icon on top toolbar so it is next to Detail mode. (dismine/valentina)

New issue 222: Move Layout icon on top toolbar so it is next to Detail mode. https://bitbucket.org/valentinateam/valentina/issue/222/move-layout-icon-on-top-toolbar-so-it-is

Susan Spencer:

Move Layout icon on top toolbar so it is next to Detail mode.
Draw mode, Detail mode, and Layout mode will be in their own group. Each as their own set of tools: Draw mode: Point Line Curve Arc Detail mode: Seam Allowance Union Layout mode: Auto Layout Adjust Layout