don't show the prototype of the run() method to beginners (fix #221)
translate the messages seen when reverting an exercise
french typo (fixes #227)
french typo-- (fixes #218)
allow to debug networking issues in git
have at most one push per 30mn to reduce the load on the github servers -- sorry guys
reduce the verbosity of running po4a
revalidate the french translation after the recent EN improvements

And relauch po4a to get the html files right
document recent changes
CourseForest: nice error message when running more than asked (fixes #228)
Course: nice error message when running more than asked (fixes #226)
Course*: forbid backward() too. forward() must be called (fixes #230)
fix another typo in French (fixes #225)
Methods: show the code calling goAndGet() when possible (fixes #232, #233)
synchronized access to currentlyPushing flag to avoid concurrency
Fix some typos
Merge pull request #235 from oster/fix-typos

Fix some typos
added some additional defense to the force/lazy git push actions
forcing git push when exiting + exit procedure is properly executed when closing the main window
Merge branch 'master' of github.com:oster/JLM