MOBILE-1618 gulp: Support more subfolders in lang files
MOBILE-1618 gulp: Support more subfolders in lang files

brenda10campos/GACER1,chester666/moodlemobile,Andydadra/moodlemobile2,sulzer/moodlemobile2,MUPC-GH/MobileMoodle3.2.0,GonzaloPachecoAlvarez/appteoloyu,romit19/SOrCEv3,GonzaloPachecoAlvarez/appteoloyu,bmmg888/moodlemobile2,bmmg888/moodlemobile2,sulzer/moodlemobile2,brenda10campos/GACER1,Diaa75/moodlemobile2,NEEDS-SAL/SOrCEv3,NEEDS-SAL/SOrCEv3,Diaa75/moodlemobile2,testvibid/imaritime,bmmg888/moodlemobile2,NEEDS-SAL/SOrCEv3,dpaloucva/moodlemobile2,romit19/SOrCEv3,balirwa/logs,mohitsofat/mobiskool,romit19/SOrCEv3,Andydadra/moodlemobile2,chester666/moodlemobile,knurmi/MoodleTest,dpaloucva/moodlemobile2,NEEDS-SAL/SOrCEv3,romit19/SOrCEv3,dougrosa/eadinatel,arahimahmad/moodlemobile2,sulzer/moodlemobile2,beppinu/moodleapp,testvibid/imaritime,romit19/SOrCEv3,mohitsofat/mobiskool,mohitsofat/mobiskool,dougrosa/eadinatel,marceloalmeidasousa/moodleapp,arahimahmad/moodlemobile2,knurmi/MoodleTest,chester666/moodlemobile,jnguy054/moodlemobile2,NEEDS-SAL/SOrCEv3,4emunoz/avcolsub,mvvkiev/moodlemobile2,mvvkiev/moodlemobile2,arahimahmad/moodlemobile2,balirwa/logs,jnguy054/moodlemobile2,digidoug/fsdmoodle,marceloalmeidasousa/moodleapp,balirwa/logs,NEEDS-SAL/SOrCEv3,MUPC-GH/MobileMoodle3.2.0,balirwa/logs,romit19/SOrCEv3,beppinu/moodleapp,4emunoz/avcolsub,balirwa/logs,bmmg888/moodlemobile2,digidoug/fsdmoodle,balirwa/logs