Merge pull request #1217 from deividmarques/3.4.0

new button to pre-panel used in topbar and sidebar
- Adjusted menu icon when you are on pre-panel.
- Adjusted menu scroll when you are on mobile.

This commit close #1216
changing variable identifier to text
inserting link ls-go-next in panel 2 and variable panel
inserting link ls-go-next in panel 3 and variable panel
inserting link ls-go-next in panel 4 and variable panel
Merge pull request #1218 from Wylkon/3.4.0

Fixed horizontal Scroll in Chrome for desktop and Mobile
Merge pull request #1219 from deividmarques/panel2

inserting link ls-go-next in all panel examples
changing style ls-user-account to desktop version when pre-panel
ls-user-account also applying the pre panel