* maki v7+ doesn't have provide "11px" icons anymore
* use 12px for icons on points & vertices on map (instead of 11px)
* use 12px for icons on QA tool (improveOSM, osmose) markers (instead of 13px)
* drop some unused code
- ES6ify (now using class syntax to define QAItem objects)
- Fix bug with KeepRight marker rendering not updating properly
- Use `qa-` prefix for the UI element classes to differentiate from iD
validation error related UI element classes
- Move away from "error" where possible in source
- Move away from snake_case naming where possible
Note that some function/method names have been untouched to make life
easier for v3 development. Have added note comments where appropriate.
- Remove translation description strings, will be using supplied
translations once the API is updated
- Change the way elements and details are presented since they can't be
easily integrated into the 3rd party description strings
This is just step one in the process while we wait for the API to supply
further strings and filtering to reduce the amount of string data
requested (since we don't need it all).
Strings are requested when the layer is first enabled and cached for the
current language (plus English as a backup).
Some error types don't require unique strings and can share common
strings among the category. This makes that possible as well as adding
support for some other types of error for demonstrative purposes.
