Add creation dates to designs documents

The metadata in each file on designs.apertis.org didn't contain a creation
date, however this is the primary means that we are ordering the documents
by on the new Apertis website so that the newer documents are listed
first.

Whilst the documents don't contain a creation date, they are stored in a
git repository that can provide us with this information. Add the
retrieved dates into the front matter.

Signed-off-by: Martyn Welch <martyn.welch@collabora.com>

content/designs/preferences-and-persistence.md

@@ -4,6 +4,7 @@ short-description = "Preferences and persistent data storage for applications an
 weight = 100
 aliases = [ "/old-designs/latest/preferences-and-persistence.html",]
 outputs = [ "html", "pdf-in",]
+date = " 2016-05-28"
 +++
 
 # Preferences and persistence

content/designs/release-flow.md

@@ -3,6 +3,7 @@ title = "Release flow and product lines"
 weight = 100
 aliases = [ "/old-designs/latest/release-flow.html",]
 outputs = [ "html", "pdf-in",]
+date = " 2019-09-13"
 +++
 
 # Introduction

content/designs/release-v2019-artifacts.md

@@ -4,6 +4,7 @@ short-description = "Draft of the artifacts planned for the Apertis v2019 releas
 weight = 100
 aliases = [ "/old-designs/latest/release-v2019-artifacts.html",]
 outputs = [ "html", "pdf-in",]
+date = " 2019-09-27"
 +++
 
 # Introduction

content/designs/robustness.md

@@ -4,6 +4,7 @@ short-description = "Dealing with loss of functionality (partially-implemented)"
 weight = 100
 aliases = [ "/old-designs/latest/robustness.html",]
 outputs = [ "html", "pdf-in",]
+date = " 2016-05-28"
 +++
 
 # Robustness

content/designs/secure-boot.md

@@ -3,6 +3,7 @@ title = "Apertis secure boot"
 weight = 100
 aliases = [ "/old-designs/latest/secure-boot.html",]
 outputs = [ "html", "pdf-in",]
+date = " 2019-10-23"
 +++
 
 # Apertis secure boot

content/designs/security.md

@@ -4,6 +4,7 @@ short-description = "Discussing and detailing solutions for the security require
 weight = 100
 aliases = [ "/old-designs/latest/security.html",]
 outputs = [ "html", "pdf-in",]
+date = " 2016-05-28"
 +++
 
 # Security

content/designs/sensors-and-actuators.md

@@ -4,6 +4,7 @@ short-description = "Possible approaches for exposing vehicle sensor information
 weight = 100
 aliases = [ "/old-designs/latest/sensors-and-actuators.html",]
 outputs = [ "html", "pdf-in",]
+date = " 2016-05-28"
 +++
 
 # Sensors and actuators

content/designs/software-development-kit.md

@@ -4,6 +4,7 @@ short-description = "Software Development Kit purpose and design (partially-impl
 weight = 100
 aliases = [ "/old-designs/latest/software-development-kit.html",]
 outputs = [ "html", "pdf-in",]
+date = " 2016-05-28"
 +++
 
 # Software Development Kit

content/designs/software-distribution-and-updates.md

@@ -4,6 +4,7 @@ short-description = "Concepts, requirements, and examples of reliable software d
 weight = 100
 aliases = [ "/old-designs/latest/software-distribution-and-updates.html",]
 outputs = [ "html", "pdf-in",]
+date = " 2019-02-13"
 +++
 
 # Software distribution and updates

content/designs/supported-api.md

@@ -4,6 +4,7 @@ short-description = "API and API stability challenges and solutions (implemented
 weight = 100
 aliases = [ "/old-designs/latest/supported-api.html",]
 outputs = [ "html", "pdf-in",]
+date = " 2016-05-28"
 +++
 
 # Supported API

content/designs/system-updates-and-rollback.md

@@ -4,6 +4,7 @@ short-description = "Robust updates with fallback (proof-of-concept)"
 weight = 100
 aliases = [ "/old-designs/latest/system-updates-and-rollback.html",]
 outputs = [ "html", "pdf-in",]
+date = " 2016-05-28"
 +++
 
 # System updates and rollback

content/designs/test-data-reporting.md

@@ -4,6 +4,7 @@ short-description = "Describe test data reporting and visualization."
 weight = 100
 aliases = [ "/old-designs/latest/test-data-reporting.html",]
 outputs = [ "html", "pdf-in",]
+date = " 2019-09-27"
 +++
 
 # Background

content/designs/test-data-storage.md

@@ -4,6 +4,7 @@ short-description = "Describe the test data storage backend and processing."
 weight = 100
 aliases = [ "/old-designs/latest/test-data-storage.html",]
 outputs = [ "html", "pdf-in",]
+date = " 2019-09-27"
 +++
 
 # Background

content/designs/testcase-dependencies.md

@@ -4,6 +4,7 @@ short-description = "Ship test case dependencies avoiding changes to the rootfs
 weight = 100
 aliases = [ "/old-designs/latest/testcase-dependencies.html",]
 outputs = [ "html", "pdf-in",]
+date = " 2019-09-27"
 +++
 
 # Test case dependencies on immutable rootfs

content/designs/text-to-speech.md

@@ -4,6 +4,7 @@ short-description = "Documents possible approaches to designing an API for Text
 weight = 100
 aliases = [ "/old-designs/latest/text-to-speech.html",]
 outputs = [ "html", "pdf-in",]
+date = " 2016-05-28"
 +++
 
 # Text To Speech

content/designs/ui-customisation.md

@@ -4,6 +4,7 @@ short-description = "Abstracting the differences between variants into a UI libr
 weight = 100
 aliases = [ "/old-designs/latest/ui-customisation.html",]
 outputs = [ "html", "pdf-in",]
+date = " 2016-05-28"
 +++
 
 # UI customisation

content/designs/upstreaming.md

@@ -3,6 +3,7 @@ title = "Upstreaming"
 weight = 100
 aliases = [ "/old-designs/latest/upstreaming.html",]
 outputs = [ "html", "pdf-in",]
+date = " 2019-10-29"
 +++
 
 Upstreaming changes made to a piece of Open Source software provides distinct

content/designs/web-engine.md

@@ -4,6 +4,7 @@ short-description = "Notes on the web engine provided by Apertis"
 weight = 100
 aliases = [ "/old-designs/latest/web-engine.html",]
 outputs = [ "html", "pdf-in",]
+date = " 2019-03-14"
 +++
 
 # Web engine

content/designs/web-portal-caching.md

@@ -4,6 +4,7 @@ short-description = "Analisys of caching strategies for web application portals
 weight = 100
 aliases = [ "/old-designs/latest/web-portal-caching.html",]
 outputs = [ "html", "pdf-in",]
+date = " 2016-11-17"
 +++
 
 # Web portal caching

content/designs/x86-build-infrastructure.md

@@ -4,6 +4,7 @@ short-description = "Hosting the build infrastructure on Intel x86-64-only provi
 weight = 100
 aliases = [ "/old-designs/latest/x86-build-infrastructure.html",]
 outputs = [ "html", "pdf-in",]
+date = " 2019-09-16"
 +++
 
 # Build infrastructure on Intel x86-64