fix(app): Change OpenUI5 Version to 1.22.9

update ui5 version
docs(doc): add info about TDG App

add an info about the 'TDG Best Practices App' regarding the query
parameter for mock data. Should help avoid confusion.
docs(doc): update info about TDG App

update the new title
Merge pull request #78 from kriswep/develop

fix(app): Update UI5 to 1.22.9 + docs(doc): info about TDG