- Add Gitlab logo and link
- Remove 'Stack exchange' section and change IRC channels to full width block
- Add 'monero-site' to the list of IRC channels and 'monero-italia' in the italian version

Only use 'Blog' as a page title instead of 'Blog By Tag' and remove 'Articles by Tag'.

- removed forum-funding-system folder and all its content
- adapt it and fr language files
Co-Authored-By: Diego Salazar <[email protected]>

main:
 - [x] translated: de.yml - Status: peer-reviewed
 - [x] translated: lang\de\ - Status: peer-reviewed
 - [x] added: "de: Deutsch in other ymls"

resources:
 * untranslated: moneropedia - some terms added to match de.yml
 * untranslated: user guides
 * untranslated:  developer guides

Special thanks to ErCiccione and rodolfo912 as well as to rbrunner7

+ Rewritten after other reading around original RingCT paper & 2017 update from Borromean to Schnorr
+ corrections after reviews

- Added upgrade snippet
- Added snippet banner to index page of all languages
- Updated yml files of all languages ready for translation
- Styling

Some people apparenly lack such common sense, but get angry at not
being told in LARGE LETTERS than having common sense is better than not.