[guadec-web/oscp-2019] Add CfP URL and mention timezone

[Tom Tryfonidis <tomtryf src gnome org>]

commit 293412e8ca49e388c7c58e2b621a5f4c8815f2e1
Author: Tom Tryfonidis <tomtryf gnome org>
Date:   Fri Apr 12 12:52:33 2019 +0000

    Add CfP URL and mention timezone

 content/pages/submit-a-proposal.md | 15 ++++++++++-----
 1 file changed, 10 insertions(+), 5 deletions(-)
---
diff --git a/content/pages/submit-a-proposal.md b/content/pages/submit-a-proposal.md
index 2bfbce0..119212e 100644
--- a/content/pages/submit-a-proposal.md
+++ b/content/pages/submit-a-proposal.md
@@ -1,6 +1,6 @@
 Title: Submit a proposal
-Date: 20180604
-Authors: Kat, Nuritzi
+Date: 20190412
+Authors: Tom
 
 ## Presentations and talks at GUADEC
 
@@ -13,7 +13,12 @@ Authors: Kat, Nuritzi
 * Lightning talk signup: <span class="badge badge-info">TBA</span>
 
 ### Scheduled presentations
-The call or proposals is now closed. These will be 25 and 40 minute talks.
+The call of proposals is now open. Submit your talks here:
+
+https://events.gnome.org/e/4ca7bd64/cfs/
+(Timezone is UTC +3)
+
+These will be 25 and 40 minute talks.
 
 
 ### BoFs & hackfests
@@ -35,8 +40,8 @@ day. Sessions can be on any topic which is suitable for the audience,
 including topics outside of GNOME and software.
 
 ### Lightning talks
-Lightning talk slots will be available for signup on the morning of Sunday 8th
-July. Talks can be on any topic which is suitable for the audience. Lightning
+Lightning talk slots will be available for signup on the morning of Sunday 25th
+August. Talks can be on any topic which is suitable for the audience. Lightning
 talks are normally 3 minutes long, depending on the length of the available
 slot. Talks will happen in the order that they are listed on the sign up sheet
 and speaker changes will be fast paced, so you need to come to the room 5