Update specialphrases_fr.txt

New and better translations
Merge pull request #87 from GiZig/patch-1

Update specialphrases_fr.txt
de + en tts preposition improvements
default order for military polygons
dim military night shader
try unclassified hiway refs with shields (forum input)
Update specialphrases_fr.txt

New and better translations
Merge pull request #88 from GiZig/patch-1

Update specialphrases_fr.txt
Bicycle routing : addition of unpaved ways to avoid_unpaved profile

(and remove barrier=block)
Merge pull request #89 from GiZig/patch-1

Bicycle routing : addition of unpaved ways to avoid_unpaved profile