summit.html: Change to past tense and add links to slides & videos

[magnusbaeck]

Applicable Issues

N/A

Description of the Change

The summit is over and we should change future tense to past tense and add links to slides and videos from the sessions. Skipping a video or two until we've cleared everyone's permission. See the result at https://magnusbaeck.github.io/eiffel-community.github.io/summit.html.

Alternate Designs

N/A

Possible Drawbacks

N/A

Sign-off

Developer's Certificate of Origin 1.1

By making a contribution to this project, I certify that:

(a) The contribution was created in whole or in part by me and I have the right to submit it under the open source license indicated in the file; or

(b) The contribution is based upon previous work that, to the best of my knowledge, is covered under an appropriate open source license and I have the right under that license to submit that work with modifications, whether created in whole or in part by me, under the same open source license (unless I am permitted to submit under a different license), as indicated in the file; or

(c) The contribution was provided directly to me by some other person who certified (a), (b) or (c) and I have not modified it.

(d) I understand and agree that this project and the contribution are public and that a record of the contribution (including all personal information I submit with it, including my sign-off) is maintained indefinitely and may be redistributed consistent with this project or the open source license(s) involved.

Signed-off-by: Magnus Bäck <magnus.back@axis.com>