Merge pull request #20 from zotya/master

Added userfriendly resizing for charts; Added descriptions to controlpanel fields
Added information for contributors

* Feature: added information for contributors
[ciobabog refs #13892]
Refs #13673; Fixed resize of chart and chartArea when textbox is used for size dimensions
Refs #14003 - Fix TypeError: cannot concatenate 'str' and 'int' objects
Merge branch 'master' of https://github.com/collective/eea.googlecharts
Refs #14106 - Update i18n for eea.googlecharts
Prepare eea.googlecharts 7.1.
Updated version for eea.googlecharts to 7.2-dev
fix latest jqueryui problems
Refs #14070; Enhancing chart filters for pivot tables