Pressing back button after playing a video from media exits the app

[pranshu-chandra]

After playing any video on the Media section, pressing the back button should open the Media home page but instead exits the app.

[developergirl53]

Yes and for entire app the same flow any subsection resultant is only exit happening, back pressed need to be handled.

[namanrana16]

same problem as #42 and #29

[aravindvnair99]

@pranshu-chandra Please check for existing issues before opening a new one. You can close this and proceed there. Duplicate of #7