Update CKEditor to 4.4.5 and add some extra required plugins

Fixes #69
Add more icons to AlloyEditor Font

Fixes #71
Use CKEditor commands for basic styles formatting

Fixes #67
Make HorizontalLine work

Fixes #66
Create List buttons

Fixes #41
Add configuration file for IcoMoon

Fixes #70
SF

Fixes #41
SF

Fixes #67
Add API doc (auto-generated) for ver. 0.2.4
Merge branch 'pr-9'