tweaks for the widget width computation base on text; takes in account the font size
Integrated long and short trends from Titousensei

- Separated as function
- Attached event listeners to updated ticker on options enable/disable
- Fixed typo in Litecoin background option
Fix javascript variables scope
Integrated Merge pull request #3 from Titousensei

- Integrated currency position
- Added options event hanlding
Merge pull request #4 from Titousensei/character_spacing

Label takes in account the font size