Merge pull request #7 from 2ion/translation-de_DE

translate additional strings, fix typo (de_DE)
use our own icon as app default
Merge branch 'master' of github.com:Unia/gcolor3
remove absolete code, add update icon cache to makefile. fixes #5
prepare for version 1.0
finalized existing translations for 1.0
fix ugly fonts
code cleaned up
all dialogs are now modal
one less global variable
make window non-resizeable again
make window non-resizeable again. for real
Add French translation
Add French langugage to LINGUAS
Merge pull request #10 from ngquerol/master

French translation
static window size, fix embarrasing previous commit
Merge branch 'master' of github.com:Unia/gcolor3
implement gtk3.10 headerbars, stack and stackswitcher and ditch stock buttons
fix README.md
fix dutch translation