fix number parsing in calculator (support e notation)

this fixes contrast/brightness going bonkers
calculator: bring back support for "," as decimal mark
Merge pull request #743 from michleb/master

French translation of the entire usermanual
noise profile: canon rebel sl1 by rich renomeron
noise profile: dmc-lx5 by romano
noise profile: sony dxc rx100m2 by pawel zogal
noise profile: olympus e-pl2 by urs schutz
noise profile: nikon d40 by bjoern sonnenschein
noise profile: sony ilce-7r by carsten liersch
noise profile: additional d40 data by xcomzcax
noise profile: nikon d610 by christian touze
noise profile: sony ilce-6000 by matti juvonen
noise profile: switch to less aggressive gx7 by thokster
noise profile: sony nex-5r by matthias weiss
noise profile: more detailed data for sony nex 5r by sander de kievit
noise profile and basecurve: for sony dsc-rx100m2 by matthew marrison and guenther r.
Merge pull request #736 from parafin/macosx

fix number parsing in calculator (support e notation)
lua : remove the -dev suffix to the API number
Fix compile
Remove the flags from image information

Revert this after the release!