Updated Czech translation
Fix some more deprecation warnings
Add a missing dot
Updated Polish translation
Updated Czech translation
build_helpers: Check for help translations, in case we have LINGUAS

We can't just assume that we always have translations for everything in
a user's LINGUAS variable. Normal translations handled this already,
but help translations didn't.
conf: Bump version to 3.11.1
meldapp: Show web help if running uninstalled
build_helpers: Support compiling gsettings schemas, and add an opt-out
Updated Spanish translation
build_helpers: Fix environment variable silly
Fix tags in Spanish help translation
Updated Spanish translation
meldapp: Add helper to get the current MeldWindow and use
WIP: Port to C++