eddited formatting, snarl-tokens to Heiders

- eddited formatting to match the rest of the documents

- added snarl-tokens to req-&res headers
eddited formatting

- eddited formatting to match rest of the Dokuments

- added some snarl tokens
formatting + snarl tokens

- eddited formatting to match other documents

- added snarl-tokens for delete requests&responses
added example res's&req's for all metadata reqs

- Example requests and responses have been added to all /put …
/metadata requests
updated images for jingles doc

- Updated images of old UI to new UI

- Updated images from old style to new style (transparent circles
insted of red lines)
deleted irrelevant images
deleted obsolete images
updated about.png in jingles/general.html
added 'get to' section, updated screenshots

- Short discription on how to get to the usermanagement section was
added

- screenshot of list view was updated to new UI
updated screenshots of the UI

- updated screenshots of UI

- eddited markers in screenshots