Question: In sencha touch documentation and forums, I could not find the list of names of 96 pictos font icons that I should pass in icon() mixin in order to import an icon. Like in following example:

@include icon('search');

Answer: 
Full list of all those token you can find out, if you open touch distribution file 
*touch/resources/themes/stylesheets/sencha-touch/base/mixins/\_Class.scss*,
line 393 (last distro), function **@function icon-character-for-name($name)**

Here is a reference to the pictos site: <http://pictos.cc/classic/font>
For 2.4.2

Look for the @function icon-character-for-name($name)
here: 
<http://docs.sencha.com/touch/2.4/2.4.2-apidocs/source/_Class.scss2.html#Global_CSS-css_mixin-icon>

Icons are at <http://pictos.cc/font/>

Remember to @include icon('icon name') in your scss;