French update

-fr_FR update (by unknown user)
- I changed épicéa to sapin as it's the tree name used in vanilla

-fr_CA update (by AloceinGame)
- Removed all capitalization in middle of sentence. In French we don't
do this (check book/movie title for example, all lower case)
- Change to utf8 coding

- nl_NL
- Fixed mistake in the spreadsheet