Work a little on performance. Concatenate and minify all js and css.

[Utwo]

Closes #369 Concatenate and minify all css and js files. Load them from local server instead of CDN or external sources.

!!! Deploy script should be changed to reflect this offline-compression

Concerns that still need to be handle:

• Fontawesome is loading all.js script. A better option would be to load just regular and fontawesome script hosting-fontawesome. Or even a better option would be to just load the svg's in img tag
• Some Fontawesome icons needs premium plan