Update API to handle the multiple formats of datetime Postgres might use.

api/src/main/sql/migrations/20190214122514-initial-schema-up.sql

@@ -14,8 +14,8 @@ create table "api_tokens" (
   id uuid default uuid_generate_v4() primary key,
   user_id uuid not null references users (id) on delete cascade on update cascade,
   name varchar not null,
-  created timestamp with time zone not null default current_timestamp,
-  expires timestamp with time zone default null,
+  created timestamp(0) with time zone not null default current_timestamp,
+  expires timestamp(0) with time zone default null,
   hashed_token varchar not null
 );
 
@@ -33,7 +33,7 @@ create table "measurements" (
   id uuid default uuid_generate_v4() primary key,
   measure_id uuid not null references measures (id) on delete cascade on update cascade,
   value integer not null,
-  "timestamp" timestamp with time zone not null default current_timestamp,
+  "timestamp" timestamp(0) with time zone not null default current_timestamp,
   ext_data jsonb not null default '{}'::json
 );
 
@@ -44,7 +44,7 @@ create table client_log_entries (
   "scope" varchar not null,
   message varchar not null,
   stacktrace varchar not null,
-  "timestamp" timestamp with time zone not null default current_timestamp
+  "timestamp" timestamp(0) with time zone not null default current_timestamp
 );
 
 create index client_log_entries_by_level on client_log_entries ("level");