Fix link for download of 1.8.0 windows package.
Add version 1.8.1
More robust detection of root_url.
automatic links to Bacula
Merge branch 'master' into JB_add_1.8.1

Conflicts:
	javascripts/main.js
Small modification of features in 1.7.0 and 1.8.0.
Update for 1.8.0 will follow.
Update for 1.8.0 version.

- mention only significant changes
Merge branch 'JB_add_1.8.1' and Jekyll WIP (1.6.x version use it).

Conflicts:
	javascripts/main.js