RIP Jim :~(
Translates Jim's message in index
Honors Jim
Changes the link for tickets to the PT version.
Updates info of proposals.
Fixes some layouting issues
Fixes a mistake in the talk description of Garnier (portuguese version).
Translates two talk descriptions to English.
Makes a lot of small adjustments in the talk descriptions (english).
Merge branch 'master' into feature-translates-talks-description

Conflicts:
	docs/selected_proposals_en.md
	docs/selected_proposals_pt.md