tdf#158250 Blueprint Plans template: update images

Contribution from Jérôme Bouat
Replace pictures with grey level and indexed colours

Change-Id: I5e253af65529d45b3c9ed2e30f6e2f018cbe03e7
Reviewed-on: https://gerrit.libreoffice.org/c/core/+/160532
Tested-by: Jenkins
Reviewed-by: Laurent Balland <laurent.balland@mailo.fr>
(cherry picked from commit 7cfd3da36b54301fd51189282b39c71efd6bb894)
Reviewed-on: https://gerrit.libreoffice.org/c/core/+/160481
Reviewed-by: Xisco Fauli <xiscofauli@libreoffice.org>
diff --git a/extras/source/templates/presnt/Blueprint_Plans/Pictures/10000000000000580000001F99D2A38C014B254B.png b/extras/source/templates/presnt/Blueprint_Plans/Pictures/10000000000000580000001F99D2A38C014B254B.png
index 51f498c..a726414 100644
--- a/extras/source/templates/presnt/Blueprint_Plans/Pictures/10000000000000580000001F99D2A38C014B254B.png
+++ b/extras/source/templates/presnt/Blueprint_Plans/Pictures/10000000000000580000001F99D2A38C014B254B.png
Binary files differ
diff --git a/extras/source/templates/presnt/Blueprint_Plans/Pictures/100000000000033C0000026D847ACE982C6E20B6.png b/extras/source/templates/presnt/Blueprint_Plans/Pictures/100000000000033C0000026D847ACE982C6E20B6.png
index df9e0e0c..084ab42 100644
--- a/extras/source/templates/presnt/Blueprint_Plans/Pictures/100000000000033C0000026D847ACE982C6E20B6.png
+++ b/extras/source/templates/presnt/Blueprint_Plans/Pictures/100000000000033C0000026D847ACE982C6E20B6.png
Binary files differ
diff --git a/extras/source/templates/presnt/Blueprint_Plans/Pictures/1000020100000500000002D0F25E20EA381A5EBD.png b/extras/source/templates/presnt/Blueprint_Plans/Pictures/1000020100000500000002D0F25E20EA381A5EBD.png
index fa93cafd..4dc77fd 100644
--- a/extras/source/templates/presnt/Blueprint_Plans/Pictures/1000020100000500000002D0F25E20EA381A5EBD.png
+++ b/extras/source/templates/presnt/Blueprint_Plans/Pictures/1000020100000500000002D0F25E20EA381A5EBD.png
Binary files differ