Convert docdock theme from submodule to native files and fix Hugo compatibility

themes/docdock/exampleSite/content/content-organisation/customize-style/disable.md

@@ -0,0 +1,24 @@
++++
+title = "Disable features"
++++
+
+You can disable feature in docdock by changing some params in `config.toml`
+
+
+## hide Next / Prev Chevrons
+```
+[params]
+disableNavChevron = true
+```
+
+## hide Search box in side menu
+```
+[params]
+disableSearch = true
+```
+
+## hide the {{%icon fa-home%}} icon in side bar
+```
+[params]
+disableHomeIcon = true
+```