[Export] Make sure `window.parent` has `ga` as own prop
[Processor] Mv `parseVariablesFile` to `parseVariables`

Also made sure that a blank string won’t fail, and allowing no spacing
between : and variable value
[JS] Improved Performance of `refreshCustomStyles`
[Cluckles] Only iterating over `Less` inputs in `refreshCustomStyles`, improves performance slighly (with 1 Less input)
[Cluckles] Better peformance, decreased refreshing customStyles/modifiers.
[Import] Fixed bug in `resetCustomStyles`
[Import] Added support for viewing/modifying variables directly from an input
[Example] Added Variables tab. Fix #11
[Export] Stopped storing `compiledCss` as it was huge
[Navbar] Removed Duplicate properties
[Nav] Removed `linkOpenHoverColor` prop as it does nothing and was removed from Bootstrap?
[Processor] Allowing '+' character in Regex, fixes breadcrumb separator
[Example] Editor now supports editing bootstrap v3.3.0
[Cluckles] Added support for all bootstrap vars v3.3.0
[Import] Readed `customStylesHeader` as it was needed
[Docs] Changed `object` back to `iframe` so `contentWindow` property can be used from console
[ThemeModifers] Slightly improved `getModifications`
[ThemeModifier] Changed suffix prefixing to use `slice` instead of index of

Fixes problem with values being truncated at the first occurrence of
the prefix unit. Which leads to compilation errors.
[Processor] Removing `px` at end of modifiers if follows brackets.

This fixes problems where when variables are loaded from a file, the
unit is added. Then you end up with a duplicate `px` when the value is
calculated, which causes compilation issues.
[ClucklesEditor] Passing no args to `applyModifcations` on reset, makes the theme reset properly.

Otherwise the variables output wont get reset but everything else would.