Revert "Various optimisations. refs #16"

This reverts commit f060892.

Gemfile

@@ -21,7 +21,6 @@ gem "minima", "~> 2.0"
 # If you have any plugins, put them here!
 group :jekyll_plugins do
    gem "jekyll-feed", "~> 0.6"
-   gem "jekyll-image_optimizer", "~> 1.2"
    gem "jekyll-sitemap", "~> 1.1"
 end
 

Gemfile.lock

@@ -19,8 +19,6 @@ GEM
       safe_yaml (~> 1.0)
     jekyll-feed (0.9.2)
       jekyll (~> 3.3)
-    jekyll-image_optimizer (1.2.2)
-      rmagick (~> 2.13)
     jekyll-sass-converter (1.5.0)
       sass (~> 3.4)
     jekyll-sitemap (1.1.1)
@@ -41,7 +39,6 @@ GEM
     rb-fsevent (0.9.8)
     rb-inotify (0.9.8)
       ffi (>= 0.5.0)
-    rmagick (2.16.0)
     rouge (1.11.1)
     safe_yaml (1.0.4)
     sass (3.4.23)
@@ -52,7 +49,6 @@ PLATFORMS
 DEPENDENCIES
   jekyll (= 3.4.3)
   jekyll-feed (~> 0.6)
-  jekyll-image_optimizer (~> 1.2)
   jekyll-sitemap (~> 1.1)
   minima (~> 2.0)
   tzinfo-data

_config.yml

@@ -23,11 +23,6 @@ url: "https://halium.org" # the base hostname & protocol for your site, e.g. htt
 twitter_username: haliumproject
 github_username:  halium
 
-# Image resizing
-raw_images: "img/raw"
-opt_images: "img/optimised"
-image_layout: "optimised_image.html"
-
 # Build settings
 markdown: kramdown
 disqus:

_includes/header.html

@@ -1,4 +1,4 @@
-<header class="site-header">
+<header class="site-header" role="banner">
 
   <div class="wrapper">
     {% assign default_paths = site.pages | map: "path" %}
@@ -10,8 +10,7 @@
         <input type="checkbox" id="nav-trigger" class="nav-trigger" />
         <label for="nav-trigger">
           <span class="menu-icon">
-            <span class="sr-only">Menu</span>
-            <svg viewBox="0 0 18 15" width="18px" height="15px" aria-hidden=true">
+            <svg viewBox="0 0 18 15" width="18px" height="15px">
               <path fill="#424242" d="M18,1.484c0,0.82-0.665,1.484-1.484,1.484H1.484C0.665,2.969,0,2.304,0,1.484l0,0C0,0.665,0.665,0,1.484,0 h15.031C17.335,0,18,0.665,18,1.484L18,1.484z"/>
               <path fill="#424242" d="M18,7.516C18,8.335,17.335,9,16.516,9H1.484C0.665,9,0,8.335,0,7.516l0,0c0-0.82,0.665-1.484,1.484-1.484 h15.031C17.335,6.031,18,6.696,18,7.516L18,7.516z"/>
               <path fill="#424242" d="M18,13.516C18,14.335,17.335,15,16.516,15H1.484C0.665,15,0,14.335,0,13.516l0,0 c0-0.82,0.665-1.484,1.484-1.484h15.031C17.335,12.031,18,12.696,18,13.516L18,13.516z"/>

_includes/twitter-card.html

@@ -1,10 +1,10 @@
 <!-- Twitter Card -->
-<meta name="twitter:card" content="{% if page.twitter_image %}summary_large_image{% else %}summary{% endif %}">
+<meta name="twitter:card" content="{% if page.image %}summary_large_image{% else %}summary{% endif %}">
 <meta name="twitter:site" content="@{{ site.twitter_username }}">
 <meta name="twitter:creator" content="@{{ site.twitter_username }}">
 <meta name="twitter:title" content="{% if page.title %}{{ page.title }}{% else %}{{ site.title }}{% endif %}">
 <meta name="twitter:description" content="{% if page.excerpt %}{{ page.excerpt | strip_html | strip_newlines | truncate: 200 }}{% else %}{{ site.description}}{% endif %}">
-{% if page.twitter_image %}
-    <meta name="twitter:image:src" content="{{ page.twitter_image | prepend: site.baseurl | prepend: site.url }}">
+{% if page.image %}
+    <meta name="twitter:image:src" content="{{ page.image | prepend: site.baseurl | prepend: site.url }}">
 {% endif %}
 <!-- End Twitter Card -->

css/main.css

@@ -468,16 +468,3 @@ pre {
     color: #008080; }
   .highlight .il {
     color: #099; }
-
-/* Only visible for screen readers */
-/* Taken from Twitter Bootstrap 3 */
-.sr-only {
-  position: absolute;
-  width: 1px;
-  height: 1px;
-  margin: -1px;
-  padding: 0;
-  overflow: hidden;
-  clip: rect(0, 0, 0, 0);
-  border: 0;
-}

index.md

@@ -4,9 +4,6 @@
 # See: https://jekyllrb.com/docs/themes/#overriding-theme-defaults
 layout: home
 title: "Halium Project"
-image:
-  - url: architecture.png
-    alt: architecture
 ---
 
 # Introduction
@@ -34,4 +31,4 @@ This project will not control the following higher level parts of the stack. Eac
 - User interface
 - Applications
 
-{% image 0 %}
+![architecture](img/architecture.png)