In the EP editor it should be possible to create multi column layouted content. A new container part should allow just this.
- A container acts as a page itself, it can contain sub-parts.
- A container has a column configuration. 1, 2, 3, 4. I think more is not necessary
Following behaviour is required:
- If the column count is reduced but the columns are not empty, the content of the columns that are not visible anymore is appended to the last visible column or appended to the container itself.
- If a container is deleted that contains parts, the parts are moved outside the container.