Workaround image magick issue with greyscale xcf files

IM doesn't seem to properly interpret greyscale xcf files
as being greyscale. Tell it to just take the red channel
in such a case.

Bug: 66323
Change-Id: I46302d43e1029d815be99f481f3942481becd74f
Make the URL input on Special:LinkSearch ltr by default

Change-Id: I77d74367375fc72e21bf16007cd6a48a2b7cd3e3
Merge "Workaround image magick issue with greyscale xcf files"
Merge "Make the URL input on Special:LinkSearch ltr by default"