Fix issue Dr-Incognito#48.

Fix some bugs.

Merge branch 'master' of https://github.com/Dr-Incognito/V2Ray-Desktop

Enable using double click to connect to/disconnect from servers.

Remove unsupported options in headers of V2Ray HTTP protocol.

Fix some bugs.

Fix some bugs.

Fix some bugs. Improve user experience.

Fix some bugs.

Fix bugs for Unity Desktop Environment.