Updated the Gemfile in order to satisfy Bundler

We were seeing the error:

You are trying to install in deployment mode after changing
your Gemfile. Run `bundle install` elsewhere and add the
updated Gemfile.lock to version control.
Merge remote-tracking branch 'free_crm/master'
Merge remote-tracking branch 'free_crm/master'
Another attempt at fixing the Gemfile for deployment

Trying to prevent the deploy error:

    You are trying to install in deployment mode after changing
    your Gemfile. Run `bundle install` elsewhere and add the
    updated Gemfile.lock to version control.

    You have added to the Gemfile:
    * psych (~> 1)
Fixed some more gem deps for deployment
Added/updated deploy scripts
Added Dutch translation strings
Removed the dependency on FatFree as an engine

This was messing with out deploy and causing problems
with the Gemfile i.c.w. Capistrano
ffaker is also required in development apparently
Make join between accounts and contacts true MTM

So contacts can belong to multiple accounts

Also added some missing locale strings and fixed
some others
Added preposition to contact details
Removed last dependency that was causing deploy issues
Added duplicate contact checking
Open contact view in a new window