Shell: fix handling of commandlines

With HANDLES_COMMANDLINE, the commandline is handled in the primary
instance. That means two things:
- We cannot let GOption handle --help, since it calls exit() after
  printing out the help
- The static booleans need to be reset to FALSE for each handled
  commandline

This commit adds a new string, 'Show help options'. It also includes
existing translations for this string that were taken from GLib.

1 files changed, 3 insertions, 0 deletions

diff --git a/po/is.po b/po/is.po
index d5d482d3d..a59ced587 100644
--- a/po/is.po
+++ b/po/is.po
@@ -3488,3 +3488,6 @@ msgstr "Á að smámynda uppsett þemu"
 #: ../vfs-methods/themus/themus.schemas.in.h:8
 msgid "Whether to thumbnail themes"
 msgstr "Á að smámynda þemu"
+
+msgid "Show help options"
+msgstr ""