Merge branch 'development' into 3.2.x-stable

CHANGES

CMakeLists.txt

CMakeModules/CalamaresAddPlugin.cmake

CMakeModules/CalamaresAddTest.cmake

CMakeModules/FindYAMLCPP.cmake

CalamaresConfig.cmake.in

lang/CMakeLists.txt

lang/calamares_ar.ts

lang/calamares_as.ts

lang/calamares_ast.ts

lang/calamares_az.ts

lang/calamares_az_AZ.ts

lang/calamares_be.ts

lang/calamares_bg.ts

lang/calamares_bn.ts

lang/calamares_ca.ts

lang/calamares_ca@valencia.ts

lang/calamares_cs_CZ.ts

lang/calamares_da.ts

lang/calamares_de.ts