Bugfix in performance slides

Use xs grid instead of sm
Add bower_components lib
Add bootstrap-ext lib
Add freya lib
Update gulpfile

Exclude loading freya lib
Update theme.less

Use local version of bootstrap-ext
instead of htmlapi downloading
Bugfix in theme.less
Bugfix: include freya.js from vendors
Merge master
Update showcase

Increase space in navigation
Add noise for devices
Fix bug with position on small devices
Clean theme.js

Remove unusual code
Update hints

Bugfix with showing hint after slide changed
Increate paddings in hint
Add hint on End slide with credits (basic)
Update icons size on end slider

In contacts navigration
Merge master
Update showcase

Fun with noise
Update Reliability slide

Add video with tests from youtube