Design improvements & update rewrite rules

- Rewrite rule for disks page was missing in .htaccess
- Bootstrap icon for disk is .icon-hdd (useless to add .icon-disks with
bad coordinate)
- Not displaying temperature if module not found in home page
Merge remote-tracking branch 'origin/master' into cleaned

Conflicts:
	pages/details.php
	pages/disks.php
	pages/home.php