Apply UtrechtJUG style

Dependencies

• [2] AHINLHBI Apply Luxoft style
• [3] WYULWETJ Reorganize
• [4] AH4CEWNI Fix attribution links in print
• [5] UH3YXOLF Start the slide deck

Change contents

• replacement in css/custom.css at line 35
  [3.768]→[3.768:799](∅→∅)
  − color: #58C4F1 !important;
  [3.768]

  [3.799]
  + color: #EE2F34 !important;
• replacement in css/custom.css at line 39
  [3.827]→[3.827:863](∅→∅)
  − background: #58C4F1 !important;
  [3.827]

  [3.863]
  + background: #EE2F34 !important;
• replacement in css/custom.css at line 44
  [3.897]→[3.897:922](∅→∅)
  − background: #58C4F1;
  [3.897]

  [3.922]
  + background: #EE2F34;
• file addition: utrecht-jug.png (----------)
  [3.29364678]
• replacement in sections/0-welcome.md at line 11
  [3.897]→[2.1747:1825](∅→∅)
  − <img data-src="img/logos/luxoft-logo.png" width="15%" class="no-background"/>
  [3.897]

  [3.982]
  + <img data-src="img/logos/utrecht-jug.png" width="20%" class="no-background"/>