WIP - compiles but does not yet work
Splay legs display patch from Mateusz
Formatting fixes
Use OpenGL alpha to draw faded splay legs
Renumber new messages to not clash with trunk, and use lowest unused numbers
Increase alpha of faded splays from 25% to 40%
Reword "Splay Legs" submenu to be simply Hide/Fade/Show; fix clashing accelerators in ca, ro, and sk
Add ChangeLog entry for merged branch