Instance homepage support (#4007)

* Prepare homepage parsers

* Add ability to update instance hompage

* Add ability to set homepage as landing page

* Add homepage preview in admin

* Dynamically update left menu for homepage

* Inject home content in homepage

* Add videos list and channel miniature custom markup

* Remove unused elements in markup service

1 files changed, 3 insertions, 0 deletions

diff --git a/shared/models/actors/custom-page.model.ts b/shared/models/actors/custom-page.model.ts
new file mode 100644
index 000000000..1e33584c1
--- /dev/null
+++ b/shared/models/actors/custom-page.model.ts
@@ -0,0 +1,3 @@
+export interface CustomPage {
+  content: string
+}