Tweaked and polished the design of the login and logout pages further, and hid the header navigation on them.

Did a massive cleanup and refactor of shared.css, to make it more organised and readable, and more consistent with naming. This included adding dashes to a few class names, and ensuring that the spelling used for words like "centre" was proper English, not US English. More modifier classes have also been prefixed with a dash, similar to how command line arguments are formatted.

Updated files that used some of these renamed CSS classes to use the new class names.

Removed superfluous outer container from body in base.html, and replaced the <div>s used for the header, content and footer with their HTML5 semantic counterparts: <header>, <main>, and <footer>.

Gave the top navigation bar a _massive_ overhaul, making extensive use of CSS3's flex properties.

Modified the behaviour of the body and its top level header, main and footer to behave responsively, and tested this on various sized viewports.

Revamped the easter egg ;)

Admin page is royally broken, so this will be the next thing for me to fix.

Began massive overhaul of the login page's layout and design.

Began a massive overhaul of the stylesheets in general, with the intent of eventually rolling out a full and polished dark theme

Began a change of naming of CSS classes such that "modifier classes" (to be used in conjunction with other classes) begin with a dash/minus/hyphen, similar to how command line arguments work. Example: class="button -default" modifies this instance of the button class so that it gets extra styling to make it stand out as the default button, eg. right alignment, blue, etc.