[guadec-web] Update submit-a-proposal.md

[Kat <kat src gnome org>]

commit 2381765f71777e44c71d616186674e945ee3be85
Author: Kat <kittykat3756 gmail com>
Date:   Mon Jun 4 13:22:04 2018 +0000

    Update submit-a-proposal.md
    
    Add more dates

 content/pages/submit-a-proposal.md | 13 ++++++++-----
 1 file changed, 8 insertions(+), 5 deletions(-)
---
diff --git a/content/pages/submit-a-proposal.md b/content/pages/submit-a-proposal.md
index 2903077..4aa5345 100644
--- a/content/pages/submit-a-proposal.md
+++ b/content/pages/submit-a-proposal.md
@@ -4,14 +4,17 @@ Authors: Kat, Nuritzi
 
 ## Presentations and talks at GUADEC
 
-### Scheduled presentations
-The call or proposals is now closed. These will be 25 and 40 minute talks p
-
-#### Dates to remember
+### Dates to remember
 
 * CFP Notifications: May, 2018
 * Schedule Announcement: June, 2018
-* Event Dates: Friday, July 6 – Wednesday, July 11, 2018
+* BoF signup: end of June, 2018
+* Ad hoc session signup: mornings Friday, July 6 – Sunday, July 11, 2018
+* Lightning talk signup: morning Sunday, July 11, 2018
+
+### Scheduled presentations
+The call or proposals is now closed. These will be 25 and 40 minute talks p
+
 
 ### BoFs & hackfests
 A separate call for birds of a feather sessions (BoFs) and hackfests will be