Feature/basic app (#1)

Feature/Basic App (#1)

Basic App Structure Consists of Time Progress Dashboard, Time Progress Detail View and Time Progress Creator.
All of these have an AppDrawer with a Link To the Dashboard and all your Track Time Progresses, also an About Button.

Commits:
* Undetailed Commit more work
* Changed isEditing ? in Detail Screen and Extracted FAB row to widget
* Extracted Progress Detail Fab Row and Progress Detail select Date Btn to
widgets
* Create Progress Detail Widgets Folder
* Extracted Edit Dates Row Widget
* Extracted Functions from ui
* Made some fields private
* LoadTimerProgressList if unloaded function
* Created App Yes No Dialog Widget
* Using Yes No Dialog in Detail Screen
* Created TimeProgress Initial Default factory
* Renamed to Time Progress Tracker
* Added About Button in App Drawer
* Code cleanup
* Code clean up and fixed Bug with null as string in Repository

Signed-off-by Andreas Fahrecker <AndreasFahrecker@gmail.com>

lib/models/time_progress.dart

@@ -1,26 +1,51 @@
 import 'package:meta/meta.dart';
-import 'package:time_progress_calculator/persistence/time_progress_entity.dart';
-import 'package:time_progress_calculator/uuid.dart';
+import 'package:time_progress_tracker/persistence/time_progress_entity.dart';
+import 'package:time_progress_tracker/uuid.dart';
 
 @immutable
 class TimeProgress {
   final String id;
+  final String name;
   final DateTime startTime;
   final DateTime endTime;
 
-  TimeProgress(this.startTime, this.endTime, {String id})
+  TimeProgress(this.name, this.startTime, this.endTime, {String id})
       : id = id ?? Uuid().generateV4();
 
-  TimeProgress copyWith({String id, DateTime startTime, DateTime endTime}) {
+  factory TimeProgress.initialDefault() {
+    int thisYear = DateTime.now().year;
+    return TimeProgress("", DateTime(thisYear - 1), DateTime(thisYear + 1));
+  }
+
+  TimeProgress copyWith(
+      {String id, String name, DateTime startTime, DateTime endTime}) {
     return TimeProgress(
+      name ?? this.name,
       startTime ?? this.startTime,
       endTime ?? this.endTime,
       id: id ?? this.id,
     );
   }
 
+  int daysBehind() {
+    return DateTime.now().difference(startTime).inDays;
+  }
+
+  int daysLeft() {
+    return endTime.difference(DateTime.now()).inDays;
+  }
+
+  int allDays() {
+    return endTime.difference(startTime).inDays;
+  }
+
+  double percentDone() {
+    return this.daysBehind() / (this.allDays() / 100) / 100;
+  }
+
   @override
-  int get hashCode => id.hashCode ^ startTime.hashCode ^ endTime.hashCode;
+  int get hashCode =>
+      id.hashCode ^ name.hashCode ^ startTime.hashCode ^ endTime.hashCode;
 
   @override
   bool operator ==(Object other) =>
@@ -28,20 +53,22 @@ class TimeProgress {
       other is TimeProgress &&
           runtimeType == other.runtimeType &&
           id == other.id &&
+          name == other.name &&
           startTime == other.startTime &&
           endTime == other.endTime;
 
   @override
   String toString() {
-    return "Timer{id: $id, startTimer: $startTime, endTimer: $endTime}";
+    return "TimeProgress{id: $id, name: $name, startTime: $startTime, endTime: $endTime}";
   }
 
   TimeProgressEntity toEntity() {
-    return TimeProgressEntity(id, startTime, endTime);
+    return TimeProgressEntity(id, name, startTime, endTime);
   }
 
   static TimeProgress fromEntity(TimeProgressEntity entity) {
     return TimeProgress(
+      entity.name,
       entity.startTime,
       entity.endTime,
       id: entity.id ?? Uuid().generateV4(),