Publish post about web resources optimizations and profile mgmt

Signed-off-by: Fred Bricon <fbricon@gmail.com>
JBIDE-17122 - Website: download section improvements

Setting "archived: true" for DevStudio 7.1.0.GA
Fixing "unknown" file type on some download URLs (they should not end with '/download')
Added missing 'end' at the end of block that performs 'git tag' command
JBIDE-17122 - Improve Website (restore link to blog annoucement and banner)
JBIDE-17122 - Website: download section improvements

Fixed link to latest stable version of JBT and DevStudio on /downloads (older version was retained)
Set "archived: true" on DevStudio 7.1.0.GA (it does not appear on side nav menu of individual download pages)
Added an "Installer" section similar to the "update site Zips" one with links to download standalone or
standalone with EAP (when configured in products.yml)
Fixed "unknown" file type (some URLs ended with "/download", which was not an expected file extension)
Added a log message when an unknown file type is detected, for easier fixing.