Added docs about map levels
Made url into a working bibstring
Made URL localisable and bumped version
Added notes file
Renamed biber bbl/bib opts more generally
Bumped .bcf version due to biber bbl/bib encoding opts rename
Better Brazilian localisation
entrynull added
Merged in new french.lbx
Merged czech localisation
Merge https://github.com/sebasvila/biblatex into dev

Conflicts:
	tex/latex/biblatex/lbx/catalan.lbx
Readying for 2.5
Fixed URL problem
Add urlstring, cleanup lbx files (#71)
Correct 3842693aa0
Another correction to 3842693aa0
Attmpted fix for #70
Undid fix for #70 as it was spurious
Don't define missing strings
Another attempted fix for #70