- [settings] added some missing variables like site widths, bg-color etc; reassigned old variables accordingly
- [settings][generic] better font-sizes names
- [settings][generic][objects] renamed headings font sizes
- [mixins] added `font-classes()` mixins for quick outputing of predefined in map font sizes and font classes through loop
- [framework] functions and mixins moved at top since it allows to use them in settings too
- [mixins][functions] moved part of `font-size()` mixin to `functions.scss` as a separate funtcion `font-size()`
- [mixins][functions] by default `font-size()` mixin and function will use `fonts` as default `$type`

It allows to call most used sizes (like `base`) simply by `font-size(base)
- [mixins][functions] renamed default font group from `fonts` to `content`
- [settings] replaced font sizes with single `$font-sizes` map
- [mixins] fixed wrong `null` `$prefix` in `font-class()`
- [settings][base][generic][objecs] replaced font size variables and maunally inputed classes with dynamically generated class with help of `font-class()` mixin, basing on provided values in `$font-sizes` map;
- [settings][generic] added responsive spacing modifiers for tables; removed `$t...` widths helpers from `tables.scss`
- [objects] better modifier class names for `.btn`
- [objects] renamed `.list--iconic` into `.iconic-list`, moved to objects
- [objects] renamed `.nav--fit` to `.pack` (since it in fact independent object), moved to objects
- [settings] added enable\disable setting for `.iconic-list` and `.pack`
- [generic] removed unused classes from `shared`
- [settings] a bit better base color
- [objects] updated `nav` object, added size variations; moved `.nav--fit` into `.pack`
- [objects] a bit better formatting for `a-nav`