A mistake in 844616a4.
`g_object_UNref` is better than `g_object_ref` to decrease a reference
count ^^'

This is uncommon, but it can happen, for example when trying to
overwrite a read-only file during a "Save As", which triggers a second
"Save As" recursively.

This requires to intervene upstream of "drag-data-received", in the
definition of the drop zone, which was not done.

Completes 13b2c41c.

Related to !109.

Completes 13b2c41c.

Related to !109.

* Allow to restore trashed files (in the sense of Mousepad session),
  whether or not they were modified or removed from trash can.
* Properly redirect to "Save As" when attempting to save a modified
  trashed file.
* Add support for trashed files in the recent menu.

Related to !112.

This fixes in particular the read-only status of files on restore.

Related to !108.

Completes c3c04096.

* Always distinguish between the file location and the monitor location,
  although they are different only in the case of a symbolic link.
* Always use the monitor location to perform tests in the monitor
  handler (fixes previously undetected deletions).
* Update the monitor location when the target of the link may have
  changed (fixes various issues on target overwrite).

This last point does not claim to cover all cases, which is beyond the
scope of this commit. This would require monitoring the starting link
and all its targets up to the final target, which goes back to the
upstream issue https://gitlab.gnome.org/GNOME/glib/-/issues/2421.

Completes c3c04096.

This fixes in particular some wrong or inconsistent behaviors:
* Open a broken link as a new empty named file, i.e. marked as modified
  and therefore savable (completes
  1f2ebca7).
* Don't restore a broken link, just as we don't restore a deleted file.
* Check if a link is broken when closing, just as we check if a file was
  deleted (competes cb553b33).

Related to !103, !108, !111.

406 translated messages.

Transifex (https://www.transifex.com/xfce/public/).

403 translated messages, 3 untranslated messages.

Transifex (https://www.transifex.com/xfce/public/).

A complement to a22bbcd5.

Also fixes an allocation error in
`mousepad_settings_store_update_env()`.

Related to !113.

Found-by: scan-build

406 translated messages.

Transifex (https://www.transifex.com/xfce/public/).

406 translated messages.

Transifex (https://www.transifex.com/xfce/public/).

An oversight in 8ddfa264.

At least when these windows come from an XfceTitledDialog, where the
icon is packed in the header bar, and thus always appears to the right
of any left buttons.

Closes #145.

353 translated messages, 53 untranslated messages.

Transifex (https://www.transifex.com/xfce/public/).

351 translated messages, 55 untranslated messages.

Transifex (https://www.transifex.com/xfce/public/).

For some reason, probably internal to GTK, when the view is focused the
notebook is also focused. As a result, when the left mouse button is
held down and the right button is pressed in turn, this second event is
received by the notebook instead of the view.

To avoid unwanted tab menu displays, as well as the tab switching that
may accompany them, this commit ensures that the right click takes place
in the tab label, not only according to the x-coordinate but also
according to the y-coordinate.

Fixes #144.

406 translated messages.

Transifex (https://www.transifex.com/xfce/public/).

406 translated messages.

Transifex (https://www.transifex.com/xfce/public/).

386 translated messages, 20 untranslated messages.

Transifex (https://www.transifex.com/xfce/public/).

406 translated messages.

Transifex (https://www.transifex.com/xfce/public/).

406 translated messages.

Transifex (https://www.transifex.com/xfce/public/).

281 translated messages, 125 untranslated messages.

Transifex (https://www.transifex.com/xfce/public/).

216 translated messages, 190 untranslated messages.

Transifex (https://www.transifex.com/xfce/public/).

387 translated messages, 19 untranslated messages.

Transifex (https://www.transifex.com/xfce/public/).

400 translated messages, 6 untranslated messages.

Transifex (https://www.transifex.com/xfce/public/).

361 translated messages, 45 untranslated messages.

Transifex (https://www.transifex.com/xfce/public/).

405 translated messages, 1 untranslated message.

Transifex (https://www.transifex.com/xfce/public/).

374 translated messages, 32 untranslated messages.

Transifex (https://www.transifex.com/xfce/public/).