Some clarification of encompassing licensing.

* See https://spdx.org/licenses/ for GFDL

Applies to #177 and #296
Merge pull request #476 from Martii/clarificationOnLicensing

Some clarification of encompassing licensing.

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Remove big bottom margin on script description;
Merge pull request #477 from jerone/scriptDescriptionMargin

Remove big bottom margin on script description

+1 merge