SEO tweaks (#167)

* Remove meta description in favor of letting open_graph() handle it

* Fix broken links to the deprecated `core-desktop-gui` repo which moved into the `cypress` repo

source/guides/references/changelog.md

@@ -452,7 +452,7 @@ Fixed {% url "`.type()`" type %} not firing `input` event for {% url "React" htt
 - We now validate that `baseUrl` is accessible **prior** to running tests. This prevents a common situation where you may forget to boot your web server and have instantly failing tests. Fixes {% issue 383 '#383' %}.
 - We now show the entire scaffolded tree of files when adding a brand new project. Fixes {% issue 401 '#401' %}.
 - We display errors coming from `babel` with more helpful information now.
-- Changed the [Desktop GUI](https://github.com/cypress-io/cypress-core-desktop-gui) to use `JWT` for authorization. **You will have to log in again**.
+- Changed the [Desktop GUI](https://github.com/cypress-io/cypress/tree/develop/packages/desktop-gui) to use `JWT` for authorization. **You will have to log in again**.
 
 # 0.18.5
 
@@ -1071,7 +1071,7 @@ Fixed {% url "`.type()`" type %} not firing `input` event for {% url "React" htt
 
 **Misc:**
 
-- Open sourced another core repo: [Cypress Core Desktop GUI](https://github.com/cypress-io/cypress-core-desktop-gui) which makes up the Cypress Desktop Application.
+- Open sourced another core repo: [Cypress Core Desktop GUI](https://github.com/cypress-io/cypress/tree/develop/packages/desktop-gui) which makes up the Cypress Desktop Application.
 - Improved the {% issue 74#issuecomment-208422453 'error message' %} displayed to users on Windows attempting to download the Cypress Desktop app.
 
 # 0.15.2

themes/cypress/layout/partial/head.swig

@@ -2,7 +2,6 @@
   <meta charset="utf-8">
   <meta http-equiv="X-UA-Compatible" content="IE=Edge,chrome=1">
   <meta name="viewport" content="width=device-width, initial-scale=1">
-<meta name="description" content="{% if page.description %}{{ page.description }}{% endif %}" />
 
   <title>{{ config.title }} | {% if page.title %}{{ page.title }}{% else %}{{ config.subtitle }}{% endif %}</title>