Tool widget start.

* Create new panel for Soil tab
* First configuration for this tool
* Local configuration to be removed
Change Matrix layout changes

* Changes on change matrix and soil sealind tools to show as accordion following mockups
* Changes on spatial selector and wfs grid to make it compatible with the new layout
* Some changes on basic configuration
Layout fixes

* Create a new plugin to show the WFS details to split functionality between panels and this widget.
* Changes on Change matrix panel to keep actual functionality with the new layout
Merge pull request #2 from alediator/unina_8_soil_tool

Unina 8 soil tool