Centered welcome text

lib/pages/placeholder.dart

@@ -4,20 +4,24 @@ class PlaceholderPage extends StatelessWidget {
   @override
   Widget build(BuildContext context) {
     return new Container(
-        padding: EdgeInsets.only(left: 16.0),
-        child: new Column(
+        padding: EdgeInsets.all(16),
+        child: Center(
+            child: Column(
           mainAxisAlignment: MainAxisAlignment.start,
           children: <Widget>[
-            new Container(
+            Container(
               padding: EdgeInsets.only(top: 32.0),
-              child: new Text(
+              child: Text(
                 'Welcome to Vikunja',
                 style: Theme.of(context).textTheme.headline,
               ),
             ),
-            new Text('Please select a namespace by tapping the  ☰  icon.',
-                style: Theme.of(context).textTheme.subhead),
+            Padding(
+              padding: EdgeInsets.symmetric(vertical: 10),
+              child: Text('Please select a namespace by tapping the  ☰  icon.',
+                  style: Theme.of(context).textTheme.subhead),
+            )
           ],
-        ));
+        )));
   }
 }

pubspec.lock

@@ -286,6 +286,13 @@ packages:
       url: "https://pub.dartlang.org"
     source: hosted
     version: "1.6.2"
+  pedantic:
+    dependency: transitive
+    description:
+      name: pedantic
+      url: "https://pub.dartlang.org"
+    source: hosted
+    version: "1.4.0"
   petitparser:
     dependency: transitive
     description:
@@ -374,7 +381,7 @@ packages:
       name: source_span
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "1.4.1"
+    version: "1.5.4"
   stack_trace:
     dependency: transitive
     description:
@@ -402,28 +409,28 @@ packages:
       name: term_glyph
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "1.0.1"
+    version: "1.1.0"
   test:
     dependency: "direct dev"
     description:
       name: test
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "1.5.1+1"
+    version: "1.5.3"
   test_api:
     dependency: transitive
     description:
       name: test_api
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "0.2.1"
+    version: "0.2.2"
   test_core:
     dependency: transitive
     description:
       name: test_core
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "0.2.0+1"
+    version: "0.2.1+1"
   typed_data:
     dependency: transitive
     description:
@@ -481,5 +488,5 @@ packages:
     source: hosted
     version: "2.1.15"
 sdks:
-  dart: ">=2.1.0-dev.5.0 <3.0.0"
+  dart: ">=2.1.0 <3.0.0"
   flutter: ">=0.1.4 <2.0.0"