Update partners/sponsors section

[bethany-bergeron]

• we are no longer working with Net Impact, so the image that is there will need to be replaced
• add Accenture, Mitacs, FEDS, and find descriptions from their websites

[allychow]

is the image usually done with photoshop? is there a template from somewhere/marketing?

[bethany-bergeron]

Unfortunately, there was no template provided, but feel free to make your own or just try and emulate what was used - up to you! Thanks Alison :)