Login to Devsandbox button workflow improvement

[mohitsuman]

Currently if user clicks on the Login to Sandbox button without having the token copied, it throws error.

We should do a proper error handling on it:

• Detect if clipboard has token copied or not.
• If token present, active the vutton and keep it red color (sam color used for above learn more buttons)
• If no token copied, notify in tooltip that please Get Token and copy it and then click on Login button.