Merge branch 'references-section' into 'dev'

components/Nav/Navbar.vue

components/Nav/TableOfContentItem.vue

components/content/ArticleReference.vue

components/content/Ref.vue

components/content/References.vue

components/content/ReferencesList.vue

components/content/RelevantAbstracts.vue

content/0.index.md

content/1.help.md

content/3.defense-systems/0.index.md

content/3.defense-systems/abi2.md

content/3.defense-systems/abia.md

content/3.defense-systems/abib.md

content/3.defense-systems/abic.md

content/3.defense-systems/abid.md

content/3.defense-systems/abie.md

content/3.defense-systems/abig.md

content/3.defense-systems/abih.md

content/3.defense-systems/abii.md

content/3.defense-systems/abij.md