Fix userlist display and navigation.

URL reversing does not work for GET params!
Translate coach report header items.

Translate tooltips for coach report headers and video 'practice concept' button.

Style coach report headers to ellipsis on overflow.
Merge pull request #1468 from rtibbles/userlist_fix

Fix userlist display and navigation.
Merge pull request #1469 from rtibbles/trans_coach

Adding missing translation to Tabular coach report.
move benchmark docs to docs/ folder