Update call to action to point folks to Zulip

Author: mfisher87

about.md

@@ -21,13 +21,13 @@ environment in JupyterLab.
 data practitioners to inform the direction of GeoJupyter.
 
 <center>
-[Sign up for an interview](/interviews/sign-up.md){.btn .btn-primary}
+{{< include call-to-action.md >}}
 </center>
 
 
 ## Next: Community event & tool choices
 
-* Synchronous chat tool
+* ~Synchronous chat tool~ Selected Zulip
 * Calendaring tool
 * Office hours meetings
 * Hackathon meetings
@@ -41,4 +41,5 @@ If you want to share your personal experiences and visionary ideas for GeoJupyte
 please [sign up for an interview](/interviews/sign-up.md)!
 
 If you have community engagement, project planning, or other specific ideas, please
-[share anything you like in GitHub discussions](https://github.com/orgs/geojupyter/discussions)!
+[share anything you like in GitHub discussions](https://github.com/orgs/geojupyter/discussions)
+or in [Zulip chat](https://jupyter.zulipchat.com/#narrow/channel/471314-geojupyter)!

agu-2024.md

@@ -12,14 +12,14 @@ toc: false
 
 ## Call to action
 
-GeoJupyter is a brand new effort started in late 2024. What we need most right now is
+GeoJupyter is a brand new effort started in late 2024. You can
+[learn more on our "About" page](/about). What we need most right now is
 input from geospatial data user communities. To help with that, please **sign up for an
-interview!**
+interview** and/or join our real-time Zulip chat!
 
 <br />
 <center>
-[Sign up for an interview](/interviews/sign-up.md){.btn .btn-primary}
-[Learn more about GeoJupyter](/about){.btn .btn-secondary}
+{{< include call-to-action.md >}}
 </center>
 <br />
 

call-to-action.md

@@ -0,0 +1,2 @@
+[Sign up for an interview](/interviews/sign-up.md){.btn .btn-primary}
+[Join the community chat on Zulip](https://jupyter.zulipchat.com/#narrow/channel/471314-geojupyter){.btn .btn-secondary}

index.md

@@ -15,5 +15,4 @@ about:
 [_Current status: Exploration & input-gathering_](/about.md)
 
 
-[Sign up for an interview](/interviews/sign-up.md){.btn .btn-primary}
-[Read our blog](/blog){.btn .btn-secondary}
+{{< include call-to-action.md >}}