Added call for proposals and speakers subpages

[jaipurandare]

Added subpages to Speakers section

• Call for Proposals : This has link to Sessionize and Guideline for Proposals. Guidelines text was approved by Chris
• Current Speakers
• Past Speakers

Updated the date of the conference on the main home page.
old: October 2025
new: 18 October 2025

Updated the Call for Proposals "submit" link to point to Sessionize url.

[surfaceowl]

@jaipurandare

Thanks for this - overall looking good, just one minor fix requested: Fix Order and formatting of menu on landing page -- it should match previous version / what it looks like on other pages.

This is the page that comes up when a user navigates to pybay.org, or clicks on the pybay logo. Screenshots:

current branch

expected -- current home page

expected -- current branch - Call For Proposals Page

[jaipurandare]

Chris,
I am not able to reproduce that navigation bar. For me, it is consistently same across all pages.

Production Home page

Dev branch Home page

Dev branch Call for Proposals Page

[jaipurandare]

Tried it in incognito window. Unable to reporduce it.

[polkapolka]

Awesome job @jaipurandare!