Bugfix SUP-19651
Merging of toolbar settings in the UI Plugin did not work and has been fixed.
Bugfix SUP-19598
Cleaned up Table-Plugin initialization (no configuration changes are necessary).
Bugfix SUP-19597
The configuration for the extra/text-color plugin are now applied correctly.
Bugfix SUP-19647
Fixes an issue where removing formatting could lead to invalid markup (and lost contents in further edits).