terminal: don't get 'word-chars' from org.gnome.Terminal.Legacy.Profile

(gedit:4931): GLib-GIO-ERROR **: Settings schema 'org.gnome.Terminal.Legacy.Profile' does not contain a key named 'word-chars'
Regression after https://git.gnome.org/browse/gnome-terminal/commit?id=e63cbcf64d2fde5bc4a8cb8ae0e3ef8c95a6d889

Reference: https://bugzilla.gnome.org/show_bug.cgi?id=732422
Signed-off-by: Igor Gnatenko <i.gnatenko.brain@gmail.com>
Updated Spanish translation
Correctly capitalize acronyms
Updated Polish translation
Updated Spanish translation
Updated Spanish translation
Remove error parameter of the "loaded" and "saved" GeditDocument signals

The error parameter has been removed since the port of gedit to
GtkSourceFile.
Don't use gedit_document_set_location() (deprecated)

Use gtk_source_file_set_location() instead.
Don't use gedit_document_get_location() (deprecated)

Use gtk_source_file_get_location() instead.
GtkSourceView >= 3.13.2 is required

For GtkSourceFile.
Updated Czech translation
[commander] Catch general exception for monitoring
[commander] Fix rollback importer
[commander] Fix writing string without encoding
[git] Gracefully handle monitor creation failure
Updated Brazilian Portuguese translation
Updated Basque language
build: check for python3

gedit enforces the use of python3 to be used for plugins. As such,
it is useless for configure of gedit-plugins to accept python2.
joinlines: use view.get_visual_line_offset now that it is public
colorpicker: some pep8 fixes