Fix potential NPE
French translation

Update of the French Translation
Missprint, specifics...
Second Proofreading
Merge pull request #64 from lborie/patch-1

French translation
Fix NoSuchMethodException in MyView for devices running < JELLY_BEAN
Add addAll Method in ChapterAdapter for devices running < HONEYCOMB
Fix escaping in strings-fr.xml
Merge branch 'master' into release