keyboard shortcuts for sao

I am wondering if we add key shortcuts on sao...

added sao + 1 deleted label

However I think that we should use alt key instead of ctrl key
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Why are you sugesting the alt keywork instead of ctrl key?

I prefer the same behaviour as gtk client.

P.S: If you plan to work on the issue please assign it to yourself.

assigned to @vperilla

Because ctrl keys are used by browser, but I think
that we can decide between (ctrl or alt).

I think we should look at our shortcuts and compare with the shortcuts of popular browsers (chrome, firefox, IE and Safari). We should take the decision according to how much conflict there are and how bad they are.

Seems that chrome prevent redefine certain ctrl shortcuts

https://github.com/ccampbell/mousetrap/issues/159
https://github.com/ccampbell/mousetrap/issues/172
https://github.com/chieffancypants/angular-hotkeys/issues/157

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