Add dmarc and spf indicators in mail view

[edlerd]

Done

• Added dmarc and spf indicators, in the same way as the existing dkim icon and hover text

Fixes # #1820

[the-djmaze]

There's a problem with you modifications.

"✔✔✔" explains your enhancement
But it is possible to have "✔" or "✔✔"
Which "✔" is missing? dkim? dmarc? spf?

What about just one ✔ or ✖ or ⚠

Or have the empty also have a "no entry" icon 🚫︎
Like:
🚫︎ = none
✔ = pass
✖ = fail

[edlerd]

Thanks for the feedback.

Or have the empty also have a "no entry" icon 🚫︎
Like:
🚫︎ = none
✔ = pass
✖ = fail

I think this is the best and easiest solution. Added the none icon just above with the last commit.