Properly recalcualte the internal structures when importing new data

Description

Properly recalculate the internal structures in all plots and not only in XYCurve when importing new data and with data ranges not being changed because they are either the same after the data import or because the auto-range is deactivated.

Without this fix plots like histogram, etc. are not being properly updated after the data import in such cases (no auto-range or the ranges didn't change).

Conformity

• Changelog entry
• Unit tests
• Update INSTALL
• Downport
• Fixes:

When external dependencies are removed

• Reporting to ...