Added alert text styling using the same alert colour schemes as bootstrap.
Added custom styling for linz model so the form fields are correctly indented.
Added global font-weight: 200 and bold style weight to 600.
Styled nav-tab to show just the font icons as the tabs for mobile and small tablet and render text tab on other screen sizes.
Merge pull request #54 from smebberson/various-custom-styling

Added various custom styling for navigational tabs, global font-weight etc.