catch widget is disposed exceptions

ref #6925 Inject context into details and supplemental view

ref #6905 Fix potential NPE

Merge branch 'develop' into bulkEditorE4

Conflicts:¶

eu.etaxonomy.taxeditor.editor/META-INF/MANIFEST.MF¶

eu.etaxonomy.taxeditor.editor/src/main/java/eu/etaxonomy/taxeditor/editor/view/concept/e4/ConceptViewPartE4.java¶

eu.etaxonomy.taxeditor.editor/src/main/java/eu/etaxonomy/taxeditor/editor/view/descriptive/e4/FactualDataPartE4.java...¶

ref #6911, #6925 Clear views when selection providing editor is closed

ref #6905 enable supplemental view for bulk editor

Merge branch 'develop' into nameEditorE4

fix #6809 add selection delay to parts

ref #6925 Update part titles

ref #6905, #6597 viewer handling

ref #6905, #6597 Move part initialisation to sub classes

ref #6905, #6597 Fix potential NPE

ref #6905, #6597 Fix potential NPE

ref #6905, #6597 further improvement on selection evaluation

ref #6905, #6597 refactor selectionChanged() method

ref #6905, #6597 Propagate selection for supplemental data view

ref #6905, #6597 Extract super class for details and supplemental viewer

ref #6905 Migrate supplemental data view