Rework file transfer windows
This is a rework of the file transfer windows.
Changes:
- Switch to
_ui
scheme - Adds a 'Remove file' button to the
SendFileDialog
(and does not clear the listbox when additional files are added) - Switch icons to symbolic versions
- Adds icons to context menu (and remove 'restore' menuitem -> pause/resume in one menuitem)
- Improves margins and alignments
- Uses
Gtk.Grid
inFileTransfersTooltip
as a replacement for deprecatedGtk.Table
- Various code style changes