Replace for system framework's "AlertDialog" to "support-v7 AlertDialog"

[ryugoo]

Issue

• none

Overview (Required)

• Related #324
  • Sorry it has become an separate PR
• Currently to using the system framework's AlertDialog widget in change language dialog
  • This widget is NOT provide Material Design dialog for under Android 4.4
• Replace to support-v7 version's AlertDialog
• If don't need the this PR, please close it

Links

• none

Screenshot

Before (4.1)	After (4.1)	Before (4.4)	After (4.4)	Before (7.1)	After (7.1)

[konifar]

:eyes:

[konifar]

LGTM! Thanks! 💯

If don't need the this PR, please close it

Never mind! I appreciate your work 👍