implement clickable menuitems

menu items can be made clickable by providing a 'href' parameter. e.g. 
```bash
echo "foo menu"
echo "---"
echo "ticket XYZ | href=http://somewhere.com/ticket/XYZ"
```
Merge branch 'refs/heads/menu-links'
optimise line parameter parsing 

use substring instead of componentsSeparatedByString
Merge branches 'htmlplugin' and 'menu-links'
add clickable link example
implement `color=..` parameter support
add example of `color=..` parameter
fix the stupid curl example
Merge branch 'menu-links'
Merge branch 'htmlplugin'