Some issue reports and suggestions

[anjari]

Found some issues:

1. When I press "f" key on wifi_password or wifi_ssid textbox, it always open the Files page. I think it's caused by "Files" button alt shortcut which is set to "f". Same thing happened too when I press "l" key, it will open "Control" page.

2. It's often happened that when switching from "Files" page to "Configure" page, the program will hang/freeze.

Suggestions:

1. Display error message if saving configuration failed.
   I tried to set new wifi password which contains special character, after I click apply and switch forth and back to "Configure" page, I saw the wifi_password still displays the old password. Turns out the wifi password can't contain special character after I checked with andriod yi action app. The android app will give you error message if you try to set password with special character. I expect the program should behave same too by showing errror message if the operation is not successful.

2. Is it possible to remember last folder path in "Files" page?
   The program always load the "/var/www/DCIM/.thumbnails" folder when switching to Files page. Is it possible to load the last opened folder instead?

3. Add "Disconnect" button.
   I would like to be able to disconnect the wifi and return to initial dialog page (where you have ip address and own vlc path field) rather than to quit and relaunch the program.

4. Switch back from expert mode to simple mode.
   It's strange that I can enable expert mode menu, but can't disable it.

5. Add some documentation about how to use the program on the readme.md.
   Few thing about the UI are not obvious like "own vlc path" field. I thought it needs to be set with VLC folder path, but turns out it's vlc.exe file path.