Latest news + banner, cypress tests, open source copy, general style tweaks (#13)

* Adding latest news and banners

* Adding first draft of cypress specs and github actions workflow

* Adding sticky position for top banner

* Tweak styles for new latest news section

* Tweak styles for text__layout innerHTML

* Fix Cypress homepage test spec

* Fix mobile navi z-index with sticky top banner

* Fix sticky banner z-index bug with mobile navi

* Refactor markdown tools to support pages beyond developer docs

* Adjust TADHACK text max-widths for small mobile

* initial changes for open source copy

* more copy

* more copy

* updated open source structure

* minor

* typo

* more copy

* Adjust styles for Open Source markdown small text

* Update readme and remove floats from docs webhooks markdown

* Add readme notes on Cypress and flesh out navi spec tests

* Fix main navi highlight when on sub-sections of markdown pages

Co-authored-by: Dave Horton <daveh@beachdognet.com>

markdown/docs/getting-started/add-application.md

@@ -0,0 +1,3 @@
+# Add an Application
+
+TODO 

markdown/docs/getting-started/add-carrier.md

@@ -0,0 +1,3 @@
+# Add a Carrier
+
+TODO 

markdown/docs/getting-started/add-phone-numbers.md

@@ -0,0 +1,3 @@
+# Add Phone Numbers
+
+TODO 

markdown/docs/getting-started/add-speech.md

@@ -0,0 +1,3 @@
+# Add Speech Credentials
+
+TODO 

markdown/docs/getting-started/index.md

@@ -0,0 +1 @@
+# Getting Started

markdown/docs/getting-started/register-sip-client.md

@@ -0,0 +1,3 @@
+# Register sip clients
+
+TODO