Merge feat/layout into v2

[dannytech]

• [x] Created a layout file containing the outline of each page
• [x] Set up blocks to extend existing common templates
• [x] Extended layout on every page
• [x] Re-wrote all pages to override layout blocks

[codecov[bot]]

Codecov Report

Merging #57 into v2 will not change coverage. The diff coverage is n/a.

@@           Coverage Diff           @@
##               v2      #57   +/-   ##
=======================================
  Coverage   95.49%   95.49%           
=======================================
  Files           9        9           
  Lines         111      111           
=======================================
  Hits          106      106           
  Misses          5        5

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[dannytech]

Switched to appending scripts/css to larger blocks (like head, header, footer) using the "append" keyword