ng-store Icon Sass-Map refactor

## _icons.scss
// Setup an icon array of name modifer keys + content values
// eg. "pencil": "\e602"; becomes a class of .icon--pencil
$icon-types: (
    "pencil": "\e602",
    "ticket": "\e60d",
    "cart2": "\e60f",
    "credit": "\e627",
    "location": "\e612",
    "map": "\e634",
    "clock": "\e614",
    "calendar": "\e636",
    "undo": "\e617",
    "undo2": "\e619",
    "redo": "\e618",
    "redo2": "\e61a",
    "forward": "\e61b",
    "user": "\e63d",
    "spinner": "\e600",
    "spinner2": "\e620",
    "cancel-circle": "\e63b",
    "close": "\e621",
    "checkmark": "\e622",
    "plus": "\e625",
    "minus": "\e624",
    "arrow-left": "\e63c"
);

// Import the fonts
@font-face {
    font-family: 'Glyphicons Halflings';
    src: url('#{$icon-font-path}#{$icon-font-name}.eot');
    src: url('#{$icon-font-path}#{$icon-font-name}.eot?#iefix') format('embedded-opentype'),
         url('#{$icon-font-path}#{$icon-font-name}.woff') format('woff'),
         url('#{$icon-font-path}#{$icon-font-name}.ttf') format('truetype'),
         url('#{$icon-font-path}#{$icon-font-name}.svg}') format('svg');
     font-weight: normal;
     font-style: normal;
}

// Catchall baseclass
%icon,
.icon {
    position: relative;
    display: inline-block;
    font-family: 'Glyphicons Halflings';
    font-style: normal;
    font-weight: normal;
    line-height: 1;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

@each $modifier, $content in $icon-types {
    %icon--#{$modifier}:before,
    .icon--#{$modifier}:before {
        content: $content;
    }
}