* allow hiding of indexing dialogs to browse loaded project while indexing
* show indexing status in status bar while indexing
* use different dialog views for different use cases to avoid state collisions
* fixed error label in status bar jittering while indexing
* show hand cursors for clickable elements in status bar
* indexing is not interrupted on pressing ESC while in hidden
* disable error table and error label while indexing
* refactored indexing messages
* forbid indexing and changing project while indexing
* don't show indexing status messages in status bar when indexing in the background
* allow tasks to run in the background
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Eberhard Graether
ad325ac974