Fix various small stuff
/api/users/_me => /api/me
Add api URL to indexed entity document source
[minor] handle undefined in addon.js dasherize function
Vendor dependencies required by the coming scroll directive
New scroll directive for elements that need an inner scroll.
Features :
- touch friendly
- custom-styled
- resize friendly
- dynamic content friendly

The directive is used in the catalog list for now
Renamed "displayer" addon configuration key to "editor" as it
reprensents more what it is.
Formatting