Add delete confirmation to avoid accidental delete

[krasi-georgiev]

I happened that few of my notes go deleted while the phone was in my pocket somehow.

Could you please add a confirmation on a note deletion.

[krasi-georgiev]

ar maybe move it on the other side of the screen so it is not next to the save button

[chrisgraham]

Implemented on my fork https://github.com/ocproducts/ImapNote2/commit/ffaa48c6d360c7c5164d41b27865b1bb01d122b1