Merge pull request #23 from zotya/master

Added possibility in chart editor to specify for the row filters to store the visible or the hidden values
Prepare eea.googlecharts 7.5.
Updated version for eea.googlecharts to 7.6-dev
Refs #14793; Fixed side panel for motion charts in edit mode
Refs #14795; Fixed special characters from metadata for visualizations
Refs #14853; Decode &amp; and similar characters properly on visualizations
Refs #14862; Fixed embedded charts and dashboards for IE8 & 9
Refs #14794; Save motionchart's advanced configuration
Prepare eea.googlecharts 7.6.
Updated version for eea.googlecharts to 7.7-dev
layout issues with qr and logo and border.
Refs #14676; Added loading spinner on charts while rendering
merged with previous changes
Refs #14910; Layout fixes for embedded daviz, made border visible
Prepare eea.googlecharts 7.7.
Updated version for eea.googlecharts to 7.8-dev
Refs #15630; Fixed pre-pivot filters for multiple visualizations in Daviz
Prepare eea.googlecharts 7.8.
Updated version for eea.googlecharts to 7.9-dev
Refs #15630; Fixed not working filters on view