Alpha 0.9

First alpha release of UniBillys !
With that, you can :
=> Create/Modify/Show/Delete a book (If you type the 13 ISBN digits, it will auto-complete your book
=> Create/Delete a borrow
=> Create/Modify/Delete a borrower

At this point, maybe the software won't open. 99% of the time, it will open, but it's possible it won't open. The issue can be solved by deleting the file lock.data

Actually only in French, the menu bar doesn't work, but it will soon
After menu bar integration complete, it will be translate in English.