i18n: build keyboard translations

This is the Wrong Thing To Do, but we'll do it for now: build the
keyboard translations into the executable. In the medium term
they should move to the modules that use them, with the re-vamp
of how translation changes are signalled.

src/calamares/CMakeLists.txt

@@ -42,7 +42,7 @@ set( calamares_i18n_qrc_content "" )
 
 # calamares and qt language files
 foreach( lang ${CALAMARES_TRANSLATION_LANGUAGES} )
-    foreach( tlsource "calamares_${lang}" "tz_${lang}" )
+    foreach( tlsource "calamares_${lang}" "tz_${lang}" "kb_${lang}" )
         if( EXISTS "${CMAKE_SOURCE_DIR}/lang/${tlsource}.ts" )
             set( calamares_i18n_qrc_content "${calamares_i18n_qrc_content}<file>${tlsource}.qm</file>\n" )
             list( APPEND TS_FILES "${CMAKE_SOURCE_DIR}/lang/${tlsource}.ts" )