Improvements to master page, to prevent headache with other features.

Header and footer are no longer sticky, and will stay put at top and bottom of the browser.
JavaScript files should be moved to header, and order should be properly considered.
Merge branch 'develop' into feature/view-improvement
Gave the header/navbar a mobile friendly collapsible menu.
Added padding to post jumbotron state.
Merge pull request #22 from knotsoftware/feature/view-improvement

Improvements to master page