Update the copyright year, add credits tab instead of putting everyone into authors.
Update the copyright year, add credits tab instead of putting everyone into
authors.

svn path=/trunk/kdepim/; revision=291115

lefou/kdepim-noakonadi,lefou/kdepim-noakonadi,lefou/kdepim-noakonadi,lefou/kdepim-noakonadi,lefou/kdepim-noakonadi,lefou/kdepim-noakonadi