llvmbot monitor: Link to in progress builds

If we're going to put "Yes" in the column, save the step
of going to the builder and clicking on the latest build.

Change-Id: I0e5a0024a2d73279a0590f4a290aaea73cd7d943
diff --git a/monitor/bot-status.py b/monitor/bot-status.py
index f19ce39..16b63c1 100755
--- a/monitor/bot-status.py
+++ b/monitor/bot-status.py
@@ -95,7 +95,9 @@
             "time_since": timedelta(seconds=time_since),
             "duration": timedelta(seconds=duration),
             "fail": build["state_string"] != "build successful",
-            "next_in_progress": next_build is not None,
+            "next_in_progress": None
+            if next_build is None
+            else "{}/builds/{}".format(agent_url, next_build["number"]),
         }
 
         if status["fail"]:
@@ -290,8 +292,11 @@
 
                     next_in_progress_cell = row.AddCell()
                     if "next_in_progress" in status:
+                        next_build = status["next_in_progress"]
                         next_in_progress_cell.Content(
-                            "Yes" if status["next_in_progress"] else "No"
+                            "No"
+                            if next_build is None
+                            else "<a href='{}'>Yes</a>".format(next_build)
                         )
 
                     first_fail_cell = row.AddCell()