Related tdf#154182 - Recognize flat open document formats in MRU list

Change-Id: I7e25cf98502db62e80f563af6a80dbf9a7ac8db3
Reviewed-on: https://gerrit.libreoffice.org/c/core/+/148845
Tested-by: Jenkins
Reviewed-by: Heiko Tietze <heiko.tietze@documentfoundation.org>
diff --git a/svtools/source/misc/imagemgr.cxx b/svtools/source/misc/imagemgr.cxx
index 7dc6705..4c0d31e 100644
--- a/svtools/source/misc/imagemgr.cxx
+++ b/svtools/source/misc/imagemgr.cxx
@@ -101,11 +101,15 @@ SvtExtensionResIdMapping_Impl const ExtensionMap_Impl[] =
    { "mod",   true,  STR_DESCRIPTION_SOURCEFILE,            SvImageId::NONE },
    { "odb",   false, STR_DESCRIPTION_OO_DATABASE_DOC,       SvImageId::OO_DatabaseDoc },
    { "odg",   false, STR_DESCRIPTION_OO_DRAW_DOC,           SvImageId::OO_DrawDoc },
    { "fodg",  false, STR_DESCRIPTION_OO_DRAW_DOC,           SvImageId::OO_DrawDoc },
    { "odf",   false, STR_DESCRIPTION_OO_MATH_DOC,           SvImageId::OO_MathDoc },
    { "odm",   false, STR_DESCRIPTION_OO_GLOBAL_DOC,         SvImageId::OO_GlobalDoc },
    { "odp",   false, STR_DESCRIPTION_OO_IMPRESS_DOC,        SvImageId::OO_ImpressDoc },
    { "fodp",  false, STR_DESCRIPTION_OO_IMPRESS_DOC,        SvImageId::OO_ImpressDoc },
    { "ods",   false, STR_DESCRIPTION_OO_CALC_DOC,           SvImageId::OO_CalcDoc },
    { "fods",  false, STR_DESCRIPTION_OO_CALC_DOC,           SvImageId::OO_CalcDoc },
    { "odt",   false, STR_DESCRIPTION_OO_WRITER_DOC,         SvImageId::OO_WriterDoc },
    { "fodt",  false, STR_DESCRIPTION_OO_WRITER_DOC,         SvImageId::OO_WriterDoc },
    { "otg",   false, STR_DESCRIPTION_OO_DRAW_TEMPLATE,      SvImageId::OO_DrawTemplate },
    { "otp",   false, STR_DESCRIPTION_OO_IMPRESS_TEMPLATE,   SvImageId::OO_ImpressTemplate },
    { "ots",   false, STR_DESCRIPTION_OO_CALC_TEMPLATE,      SvImageId::OO_CalcTemplate },