Add a description to all pages

[mcb2003]

I've set up the includes/headers.inc.php file to accept a description if, on each page, you do the following:

$description = "<Your Description Here>";

So now that this function is implemented, we should think of a description for:

• [x] The home.php page (we want the website as a whole to get more traffic and the home page will likely recieve the most).
• [x] The blog.php page (we want the blog to be publicised).
• [x] The chat.php page (we want people to join the community).
• [ ] The state-of-linux-accessibility, what-is-linux.php and webbie-programs.php articles (articles are what will bring users).
• [ ] The mac-os-10.12-video.php, ubuntu-17.10-video.php and ubuntu-mate-16.04-video.php video pages (I've proven with my youtube channel that videos bring viewers).

Other pages should have descriptions, but are not necessarily as important.

[mcb2003]

update

After the release of commit b252c83f63096ea9b5f10ebc699e17db983d77e4 the way descriptions, titles and contributers (authors as far as the meta tags are concerned) are fetched has changed.

These values are now pulled from the pages table in the database.

Table Columns

• pageTitle = The page's title, with Blind Computing automatically prepended to it.
• pageDescription = The page's description (automatically added to the meta tags on each page.
• contributer = The contributer of the page. This is automatically set as the "author" meta tag.

[mcb2003]

Home, Blog, and Chat/Contact now all have pageDescriptions in their database entry. This was completed in commit 34490ba.