Don't set the focus to the editor widget when clicking a symbol while holding Control

When clicking a symbol in the Symbols sidebar and holding the Control modifier key, don't
set the focus to the editor widget so further navigation in the Symbols sidebar with keys
is possible.
Strip more tags which start with a keyword
Regenerate Python tag list

Generated against a clean Python 2.7 installation.
Don't use deprecated gtk_box_pack_start_defaults()
Don't use long-deprecated gtk_widget_{ref,unref}()
Don't access GtkDialog fields directly
Don't use deprecated GtkNotebookPage
Don't access GtkNotebook fields directly
Don't access GtkWidget:parent directly
Don't access GtkSelectionData fields directly
Don't use pre-GObject types and macros
Don't use gtk_widget_hide_all(), deprecated in 2.24
Don't access GtkFontSelectionDialog fields directly

Also don't hack around and handle clicks on the dialog's buttons but
rather simply handler the dialog's response.
Don't use deprecated GtkObject
Don't access GtkColorSelectionDialog fields directly

Also don't hack around and handle clicks on the dialog's buttons but
rather simply handler the dialog's response.
Check the VTE library we're loading actually have all symbols we need

This prevents a crash if the VTE library we happen to load lacks a
symbol we need, which can happen e.g. if the user passed an improper
library to the --vte-lib command-line option or if the VTE library is
loadable but broken.
Ruby parser: don't create an extra scope after "for .. in .. do"

When "do" appears as the separator after a "for", "while" or "until"
construct, don't improperly make it start its own scope too.
Fix some Russian strings.
Added Basque translation provied by Asier Iturralde Sarasola
Fix some Russian strings.