- fixed fontawesome icon rules in buttons, cards, sidebar & smallbox
- added calc for `.content-wrapper` min-height
- added layouts: top-nav, boxed & sidebar collapsed
- fixed mailbox attachment size
- added bg-*, navbar-*
- updated demo.js
- updated sidebar in demo files (added layout options)
- added autoprefixer to fix browser specific css changes
- added css sourcemap for adminlte.min.css

- updated all demo pages
- updated fontawesome entries in build/npm/Plugins
- updated package.json & package-lock.json
- replaced fontawesome files in plugins/

- added Modals Demo Page
- added Link to Modals in any other Demo Page
- added Modal Color Variation fixes
- updated zindex values `header` from 1000 to 900 `sidebar` from 1100 to 950 (below bootstrap 4 defaults to work with dropdown, modal, popover & tooltip)
- removed tooltip zindex overide

Loading the minified version of fastclick doesn't work. My guess is that the FastClick object gets renamed in the minification process, making the check for "typeOf FastClick" useless and causing FastClick to never execute. Loading the unminified version of fastclick removes the 300ms click delay across the board.

- Modified one of the original styles to be matched with AdminLTE and Works good on both Desktop and Mobile versions.
- Minified .js and .css files
- Created new pace page for Pace preview
- Added Pace page to navigation to the whole theme files

This fixes a typo in multiple files.
See #482

This shouldn affect the website, cause the typo got fixed in .css and
.html files.

Commented metatag