Unable to select MP4 file as attachment

[wreiske]

• Your Rocket.Chat Experimental app version: 1.14.0.9999999999
• Your Rocket.Chat server version: 1.1.1 , and open.rocket.chat
• Device (or Simulator) you're running with: SAMSUNG-SM-N920V (Android 7.0)

The upload dialog should respect the server's allowed file types.

[diegolmello]

Hey, man.
Thanks for reporting.
It's not implemented yet.
I'm almost sure this PR will do the job: #882
I'm closing this one.