Feat: Add IOS 7 style icons, and update CSS to avoid conflict with fontAwesome, Glyphicons
Chore: Basic Less back to Scss
Feat: Update range slider style
Chore: make toastr style variables
Feat: Add callout components
Chore: remove bootstrap wizard form

- it depend on Bootstrap JS,
- and need manually download instead of Bower
I don't like it, so remove wizard form for now
Chore: organise things up
Chore: replace Bootstrap-select with simple styled Select

- Bootstrap-select depend on JS file of Bootstrap, which is not good
- Select2 is a bit complicated, and need re-styling, not good
Chore: Update icons

- Remove Glyphicons Pro
- Add Bootstrap's default Glyphicons back
- Replace all icons with IOS 7 style line icons