Add datahead8888 back to authors.txt file
Fix alphabetical ordering in authors.txt.
Add "170jam" music by Aakburns.
Remove duplicate .desktop file by symlinking
Fix libdl usage

For instance, it's not needed/does not exist on FreeBSD. ${CMAKE_DL_LIBS} handles this automatically.
Add new icon.

See: http://forum.secretchronicles.de/topics/152

Closes #263.
Use new icon for the game window
Add missing copyright information on new icon files
Add missing 128px icon.

Source also is http://forum.secretchronicles.de/topics/152#p691
Enrich “red8” level with scripting.
Add quintus_8 level
Change "mushroom" to "berry" and fix insane handling of bonusbox display name translation.

It is not the job of cBaseBox to find out what’s in a cBonusBox.

New translations introduced: /cc @xet7
Finnish translation: Change mushroom to berry, bonusbox names etc.
Fix sauer2_8 (invalid borders)
Fix “space” level (invalid borders)
Fix “neverland” level (invalid borders)
Fix Desert Break In Level (sand pit tile back/front issue) Cf #259
Add gitignore entry for emacs and gedit temp files
Swapping game tutorial with sauer2's new version
Removed old story song used in old tutorial.  Closes #284.  Cf #97.