Taskman cleanup
This is a small cleanup of taskman, both in code and UX terms. We currently host a bunch of (imo: silly and useless) items in the toolbar and some parts of the code are more complicated than they would have to be.
I have
- moved the about dialog and the column settings to the settings dialog
- replaced the Toolbar by a regular HBox (which can then be moved to the headerbar in the form of 3 buttons: settings, identify and find)
- migrated the application window to CSD and settings to XfceTitledDialog
- migrated GtkEntry to GtkSearchBar so we can easily hook up visibility as conditional and remember as a setting
Edited by Simon Steinbeiß