Fix images path
Fix missing token information for settings
Update version
Update info.xml

Change required version of ownCloud and add contributor.
Use OCP namespace
Use img instead of css to display background image

With css, the background image is "cut" by other div (for example, you
may not see the background image in the files list if there is too many
file rows).
I use an img, with position absolute, bottom right like the css
background and small opacity to prevent visibility problems.
Update version
Use OCP Namespace in appinfo/app.php
Fix img path with OCP\image_path

Thx to @eMerzh for pointing it
Change indentation spaces to tabs
Remove unneeded and broken require
Merge pull request #868 from ldidry/tattoo_enhance

Tattoo fix + enhance