IDI-118:
- added new profiles to people.php
- updated people sidebar navigation
- changed tabs to spaces
- added photos
Merge branch 'master' into IDI-118

Conflicts:
	sidebar-people-nav.php
IDI-118: Added a profile and image.
IDI-118: Added 2 more profiles.
GPII-118: Added profile.
IDI-118: Added the last batch of profiles. Removed some uneeded language encoding.
IDI-118: Made edits as per acheetham's feedback. Also fixed some minor issues with existing content.
IDI-118: Updated Mr. Addison's profile.
IDI-118: Added a profile image.
IDI-118: Fixed some wrong alt text and edited some text.
IDI-118: Add missing image of Geoffrey Shea.
Merge branch 'IDI-118' into development