Do we really want the edit button before the other columns in the policies view?

@sjcorbett 's change to wrap long values (and truncate extremely long keys, I believe) in https://github.com/brooklyncentral/brooklyn/pull/806/files has got rid of the problem where "Edit" disappeared off the screen, thus requiring scrolling.

Feels more natural to me to have Edit as the last column, with the key + value being the primary things to show so coming first.

@sjcorbett : your thoughts on this?