Prepare for 1.6.0

Squashed commit of the following:

commit 228addba5b853dfe4afd5e726c6d7852767748c7
Author: Thomas Schank <DrTom@schank.ch>
Date:   Thu Jul 31 09:07:12 2014 +0200

    Update rspec list

commit 056ee1a4ac940ac70bdb3d581448c4d8697440ef
Author: Thomas Schank <DrTom@schank.ch>
Date:   Thu Jul 31 09:03:34 2014 +0200

    Remove specs, remove attachments from trial

commit a6d43318dd9a245dc9957ab2f5eb9142525353f9
Author: Thomas Schank <DrTom@schank.ch>
Date:   Thu Jul 31 08:59:04 2014 +0200

    new file:   config/database_cider-ci_template.yml

commit f99638d07eec7fb3fbced53383b85703dab0dea4
Author: Thomas Schank <DrTom@schank.ch>
Date:   Wed Jul 30 16:11:28 2014 +0200

    Improve version number rendering