add copyright header, where it was missing
refer to doc/COPYRIGHT.rdoc in our README
some more copyright headers for our work packages
have copyrights at the bottom of .rdoc and .md files
have copyrights in some special files
have copyright headers for .text.erb files
copyright header for .atom.builder files. we really have some funny file extensions...
have copyright headers for json.erb files
do not forget copyright header in tinymce.js and jstoolbar.js
copyright header with correct syntax in .atom.builder files
use HTML comments for the copyright header in .md files
Adapts Rails3's changed route globbing behavior

In Rails3, globbed routes are strings and not arrays.
Adapts format handling
Adapts route specs to Rails3 route globbing
Adds changelog entry

[skip ci]
Adapts repository tests to changed route globbing
Strips trailing path separator
Adds missing repository diff route
removed PlanningElement, pulled up remaining methods and started fixing broken specs[skip_ci]
Moves code from issue.rb into work_package.rb.

This also removes double private declaration from work packages model.