Use specmap value
Fix #1602
Use specmap on others mats
Convert remaining shaders
Fix #1438
Some fixes
Additionnal fixes
Try to emulate enery conservation
Revert "Revert "Prepare shader for specmap value""

This reverts commit 780482edba2b0de3358f7e2139db3de3318f729e.
Merge branch 'specmap'
Fix godray opacity
Fix splatting
Tried a different layout for the checkboxes (sorry, but I didn't like the
previous approach at all). Only disadvantage now (I can think of) is that
the width of the lables is now hard coded to 40% of the screen.
Fix display of notifications.
Merge branch 'master' of github.com:supertuxkart/stk-code
Emulate envmap specular reflexion
Tweak envmap
Added OS version for windows and distro-version for linux (not fully tested).
Merge branch 'master' of github.com:supertuxkart/stk-code
Merge pull request #1603 from Flakebi/fix

Fix #1438