Compile all language translation updates into respective .qm files

After updating the '.ts' translation source files from weblate,
compile all of the language translations into '.qm' files.

This was done with the following command:

$ make i18n

This effectively runs the 'lrelease' command on each '.ts' file.  For
example:

$ lrelease i18n/manuskript_es.ts

i18n/manuskript_fa.qm

@@ -0,0 +1 @@
+<ｸdﾊ<>箆!ｿ`｡ｽﾝ