Add a footer with the version

This adds a responsive footer to the page
that had the standard DCE version displayed
at the bottom. This also changes the header
to include an SVG logo, which is the
first part of adding a logo, but it will need
a PNG fallback.

Connected to UCLALibrary/ursus#10
Connected to UCLALibrary/amalgamated-samvera#132

app/assets/stylesheets/application.css

@@ -10,6 +10,6 @@
  * files in this directory. Styles in this file should be added after the last require_* statement.
  * It is generally better to create a new file per style scope.
  *
- *= require ursus
  *= require blacklight
+ *= require ursus
  */

app/assets/stylesheets/ursus.scss

@@ -1,3 +1,7 @@
 @import 'ursus/fonts';
 @import 'ursus/colors';
 @import 'ursus/buttons';
+@import 'ursus/navbar';
+@import 'ursus/facets';
+@import 'ursus/footer';
+@import 'ursus/body';

app/assets/stylesheets/ursus/_body.scss

@@ -0,0 +1,9 @@
+body {
+  display: flex;
+  flex-direction: column;
+  min-height: 100vh;
+}
+
+#main-container {
+  flex: 1;
+}

app/assets/stylesheets/ursus/_facets.scss

@@ -0,0 +1,5 @@
+@import 'colors';
+
+.facet-values {
+  display: inline-flex;
+}

app/assets/stylesheets/ursus/_footer.scss

@@ -0,0 +1,11 @@
+.footer {
+  background-color: $ucla-secondary-blue-dark;
+  height: 100px;
+}
+
+.version {
+  color: snow;
+  float: right;
+  margin: 1em;
+  margin-top: 2em;
+}

app/assets/stylesheets/ursus/_navbar.scss

@@ -0,0 +1,7 @@
+@import 'colors';
+
+.navbar-brand {
+  margin-top: 1em;
+  margin-left: 0 !important;
+  background: transparent image_url('logo.svg') no-repeat top left !important;
+}

app/assets/stylesheets/ursus/_variables.scss

@@ -6,5 +6,9 @@ $system-font-stack: -apple-system,BlinkMacSystemFont,"Segoe UI",Cantarell,Roboto
 $font-family-sans-serif: "ProximaNova-Regular", "Verdana", $system-font-stack;
 
 //== Links
-$link-color: $ucla-link;
+$link-color: $ucla-secondary-blue-dark;
 $link-hover-color: $ucla-link-hover;
+
+$navbar-inverse-link-color: snow;
+
+$navbar-inverse-bg: $ucla-secondary-blue-dark;

app/views/shared/_footer.html.erb

@@ -0,0 +1,8 @@
+<footer class="footer"
+  <div class="container">
+
+    <div class="text">
+      <span class="version">Version <span title="<%= GIT_SHA %>"><%= BRANCH %> updated <%= LAST_DEPLOYED %></span></span>
+    </div>
+  </div>
+</footer>

config/initializers/git_sha.rb

@@ -0,0 +1,26 @@
+revisions_logfile = "/opt/#{ENV['PROJECT_NAME']}/revisions.log"
+GIT_SHA =
+  if Rails.env.production? && File.exist?(revisions_logfile)
+    `tail -1 #{revisions_logfile}`.chomp.split(" ")[3].gsub(/\)$/, '')
+  elsif Rails.env.development? || Rails.env.test?
+    `git rev-parse HEAD`.chomp
+  else
+    "Unknown SHA"
+  end
+
+BRANCH =
+  if Rails.env.production? && File.exist?(revisions_logfile)
+    `tail -1 #{revisions_logfile}`.chomp.split(" ")[1]
+  elsif Rails.env.development? || Rails.env.test?
+    `git rev-parse --abbrev-ref HEAD`.chomp
+  else
+    "Unknown branch"
+  end
+
+LAST_DEPLOYED =
+  if Rails.env.production? && File.exist?(revisions_logfile)
+    deployed = `tail -1 #{revisions_logfile}`.chomp.split(" ")[7]
+    Date.parse(deployed).strftime("%d %B %Y")
+  else
+    "Not in deployed environment"
+  end