Proposed changes

This Release contains many bugfixes and some new features.

We introduce new settings for the Canvas itself. Users can now:

• control the height of the canvas (by amount of vertical grid cells)
• the height of vertical grid cells
• set background image and control the positioning
• use Gradients for background

We also introduced for all backgrounds the Gradient Selector and improved by this the Color Selector

We fixed OAuth Refresh Token Bug, where the user got a message "No Workspace found".

We added support to control better the validation behavior for input fields on empty fields.

And we fixed the private NPM Repository Behaviour.