scouting: Fix timestamp issue during action submission

The newly deployed scouting app was giving users these kinds of
errors:

   Received 500 Internal Server Error: "Failed to add action to
   database: ERROR: null value in column "time_stamp" of relation
   "actions" violates not-null constraint (SQLSTATE 23502)"

The issue was that the database was created with the
`Action.TimeStamp` field. This was the spelling from the action
submission patch I cherry-picked a long time ago. Later, as the action
submission patch made its way onto master, the spelling changed to
`Action.Timestamp`. This means that a database that was already
created cannot be used by both versions of the software.

Since the database already used the `TimeStamp` spelling, I am
changing the code here to match. For next year, we should settle on a
spelling and fix it.

Signed-off-by: Philipp Schrader <philipp.schrader@gmail.com>
Change-Id: I776724e740556ff8267d7a68be5111793b4574db
diff --git a/scouting/db/db_test.go b/scouting/db/db_test.go
index 663a080..bef396b 100644
--- a/scouting/db/db_test.go
+++ b/scouting/db/db_test.go
@@ -813,27 +813,27 @@
 	correct := []Action{
 		Action{
 			TeamNumber: "1235", MatchNumber: 94, SetNumber: 1, CompLevel: "quals",
-			CompletedAction: []byte(""), Timestamp: 0000, CollectedBy: "",
+			CompletedAction: []byte(""), TimeStamp: 0000, CollectedBy: "",
 		},
 		Action{
 			TeamNumber: "1236", MatchNumber: 94, SetNumber: 1, CompLevel: "quals",
-			CompletedAction: []byte(""), Timestamp: 0321, CollectedBy: "",
+			CompletedAction: []byte(""), TimeStamp: 0321, CollectedBy: "",
 		},
 		Action{
 			TeamNumber: "1237", MatchNumber: 94, SetNumber: 1, CompLevel: "quals",
-			CompletedAction: []byte(""), Timestamp: 0222, CollectedBy: "",
+			CompletedAction: []byte(""), TimeStamp: 0222, CollectedBy: "",
 		},
 		Action{
 			TeamNumber: "1238", MatchNumber: 94, SetNumber: 1, CompLevel: "quals",
-			CompletedAction: []byte(""), Timestamp: 0110, CollectedBy: "",
+			CompletedAction: []byte(""), TimeStamp: 0110, CollectedBy: "",
 		},
 		Action{
 			TeamNumber: "1239", MatchNumber: 94, SetNumber: 1, CompLevel: "quals",
-			CompletedAction: []byte(""), Timestamp: 0004, CollectedBy: "",
+			CompletedAction: []byte(""), TimeStamp: 0004, CollectedBy: "",
 		},
 		Action{
 			TeamNumber: "1233", MatchNumber: 94, SetNumber: 1, CompLevel: "quals",
-			CompletedAction: []byte(""), Timestamp: 0005, CollectedBy: "",
+			CompletedAction: []byte(""), TimeStamp: 0005, CollectedBy: "",
 		},
 	}