adjust magic binary index that identifies the theme name res id

because libreoffice inserted a bunch of extra resources since fork point.

We should get rid of these ids entirely and e.g. at least instead use the
filename number as the the id instead which would be a little less painful.

Change-Id: I5d0a3b5e60dbe448164bdff25d46171a1ed4d55e
(cherry picked from commit 8e9bcdb73adf7b544299bb57fcce5423b43cc058)
diff --git a/extras/source/gallery/gallery_system/sg11.thm b/extras/source/gallery/gallery_system/sg11.thm
index 81bf70b..1799a1c 100755
--- a/extras/source/gallery/gallery_system/sg11.thm
+++ b/extras/source/gallery/gallery_system/sg11.thm
Binary files differ
diff --git a/extras/source/gallery/gallery_system/sg12.thm b/extras/source/gallery/gallery_system/sg12.thm
index 73dfde6..b5bf69e1 100755
--- a/extras/source/gallery/gallery_system/sg12.thm
+++ b/extras/source/gallery/gallery_system/sg12.thm
Binary files differ
diff --git a/extras/source/gallery/gallery_system/sg14.thm b/extras/source/gallery/gallery_system/sg14.thm
index 068c981..0001b1f 100755
--- a/extras/source/gallery/gallery_system/sg14.thm
+++ b/extras/source/gallery/gallery_system/sg14.thm
Binary files differ
diff --git a/extras/source/gallery/gallery_system/sg15.thm b/extras/source/gallery/gallery_system/sg15.thm
index 161323c..ef153e2 100755
--- a/extras/source/gallery/gallery_system/sg15.thm
+++ b/extras/source/gallery/gallery_system/sg15.thm
Binary files differ
diff --git a/extras/source/gallery/gallery_system/sg18.thm b/extras/source/gallery/gallery_system/sg18.thm
index 28a14c1..4683a2f 100755
--- a/extras/source/gallery/gallery_system/sg18.thm
+++ b/extras/source/gallery/gallery_system/sg18.thm
Binary files differ
diff --git a/extras/source/gallery/gallery_system/sg19.thm b/extras/source/gallery/gallery_system/sg19.thm
index bb84591..6aa8926 100755
--- a/extras/source/gallery/gallery_system/sg19.thm
+++ b/extras/source/gallery/gallery_system/sg19.thm
Binary files differ