rework of DE translation (#2806)

* started rework of translation to DE, added translation rules and dictionary

* reworks DE translation of JSONata /editor-client/locales/de/jsonata.json

* rework DE translation of editor-client

* moved /editor-client/locales/de/README.md to Wiki https://github.com/node-red/node-red/wiki/Design:-i18n-de

* Update README.md

* Update README.md

* Create README.md

* Create README.md

* fixed #2: "Sie müssen ..., um ... zu können"

* fixed #3

* fixed #4 and removed unnecessary spaces

* fixed #5

* fixed #6, added missing dots, removed unnecessary spaces

* fixed #7, #8, #9

* fixed #10, #11, #12, #13, #14, #15

* fixed #17, #18, 19

* fixed #19

* moved /editor-client/locales/de/dictionary.csv to https://github.com/heikokue/node-red-designs/blob/i18n-de/designs/i18n-de/dictionary.csv

* reworked DE translation of runtime

* fine-tuned DE translation of editor-client

* reworked DE translation of common nodes, fine-tuned editor-client

* reworked DE translation of all nodes, fine-tuned editor-client, intotips, jsonata & runtime

* small i18n fixes

.gitignore

@@ -7,7 +7,9 @@
 .sessions.json
 .settings
 .tern-project
+.i18n-editor-metadata
 *.backup
+*.bak
 *_cred*
 coverage
 credentials.json
@@ -24,3 +26,4 @@ docs
 !packages/node_modules/**/docs
 .vscode
 .nyc_output
+sync.ffs_db