Context menu showing confusing possibilties

There are some example of items which show up in the PeaZip context menu which 
are sometimes a little bit confusing (have been looking at other users screen 
how they are using PeaZip) and I would suggest to remove them in certain 
circumstances.

Examples:
* You open the context menu on a folder and there is an option "Extract..." 
When this option is then chosen it just opens a PeaZip dialog which is 
basically empty.
* when opening up a context menu on a zip file there is an option to zip and 
mail and also add to archive. This will create a zip file in a zip file. I saw 
people using this option which were then quite confused...

Would be great to tweak the context menu a bit to have less possibilities 
either when choosing a zip file or another file. This way the user would be 
less confused.

Original issue reported on code.google.com by sao.es...@gmail.com on 6 Feb 2013 at 3:16

nakijun / peazip

Context menu showing confusing possibilties #210