* add reference to pt-BR on all CONTRIBUTING files
Signed-off-by: Ricardo H H Kojo <ricardokojo7@gmail.com>
* add CONTRIBUTING-pt_BR.md
Signed-off-by: Ricardo H H Kojo <ricardo.kojo.dev@gmail.com>
* add CONTRIBUTING-de.md with German contributing guidelines.
* edit typos in CONTRIBUTING.md.
* add link to German contributing guide to language list in other contribution files, re-order list alphabetically.
* switch back the order of English and French language links in all Contribution Guidelines.
* eliminate extra spaces and put spaces in the correct positions.
