Update git submodules
- Update extensions/ImageMap from branch 'REL1_40' to 2f68ee63c1be4fb5ff70bb272a863c8fd98382ea
- Localisation updates from https://translatewiki.net.
Change-Id: I0ad57feeeacbb4747d962a91a335ef60caf59562
- Localisation updates from https://translatewiki.net.