various improvements to the displayed english strings
'ant i18n-update', no manual change
French translation of the engine back to 100%
translate the bindings of the lander world to french
improve a bit the english missions while translating them to french
update the french translations of missions. Almost at 100% but not there yet
a bit of documentation, and point to the wiki
Port that mission text to scala
French mission texts back at 100%
document my last change
rerun of po4a, no manual change
Allow students to provide feedback on exercises they just passed
Merge pull request #200 from Cedric-Huguenin/master

Call for help with the Play Server
translate the strings I just added to the engine
ant i18n-update, no real change
Merge branch 'master' of github.com:oster/PLM
Fix two typos in French.
Merge pull request #201 from christopho/fix_fr_typos

Fix two typos in French.