Adds class completions within LESS files
Some minor tweaks and added features

- Renames parser.py to style_parser.py
- Renames menu item 'Use Emmet' to 'Enable Emmet Completions'

- Adds ability to update view settings to auto trigger emmet completions
- Adds menu item 'Auto Trigger Emmet Completions' to toggle the above setting

- Settings no longer caches the settings file and now reads it on each request
- Resolves cache not loading on ST start via the above settings change
actually removes parser.py