Various belated content updates

Content:

• Added Michael Hales' Mayflower to homepage slideshow.
• Added Keith Pegram's Mayflower to homepage slideshow.
• Added Ralph Stephan's car wanted advert.
• Removed Dorien's "grille wanted" advert.
• Removed outdated cars for sale adverts.

Refactors:

• Git-ignored Jekyll's new auto-generated cache directory.

Spares updates section

Content:

• Added updates section to spares page featuring the latest information.
• Removed Drive It Day notice from homepage, now that the event has happened.
• Removed "new lines available" heading from the regalia page.

Second FBHVC coronavirus press release

Content:

• Added the federation's updated press release about Drive It Day 2020, in relation to COVID-19.

FBHVC coronavirus press release

Content:

• Added news article about FBHVC's press release concerning Drive It Day and the COVID-19 pandemic.

2020 AGM agenda published

Content:

• Added this year's AGM agenda to the documents section.
• Added a notice about the agenda to the homepage.
• Fixed outdated link text on the AGMs page sidebar.

2020 club AGM news article

Content:

• Added a news article advertising the upcoming 2020 club AGM.
• Fixed an incorrectly rendered en-dash on the AGM agenda page.
• Fixed an incorrect breadcrumb bar value on the Drive Your Triumph Day news article.

Flower Power issues 161-163

Content:

• Added Flower Power issues 161-163.
• Added technical articles featured in said Flower Powers.
• Added Midlands events calendar for 2020.
• Updated the spares and alternatives guide to the January 2020 edition.
• Sorted Flower Power technical article list alphabetically.

Drive Your Triumph Day article

Features:

• Created a new 2020 news article archive section.

Content:

• Added a news article advertising the upcoming Drive Your Triumph Day.

Bug fixes:

• Added missing August link to 2019 news archive's sidebar.

Radiator grille wanted ad

Content:

• Added a radiator grille wanted ad for Dorien in Canada.

2020 AGM details confirmed

Content:

• Updated the AGMs subsection of the documents section with details of the upcoming AGM.
• Added a notice to the homepage advertising the AGM.

Bug fixes:

• Fixed a layout issue in the page footer introduced in a recent Chromium update.