fix(lints): single quote and const constructor rules

analysis_options.yaml

@@ -65,6 +65,4 @@ linter:
 
     prefer_typing_uninitialized_variables: false
 
-    prefer_const_constructors_in_immutables: false
-
-    prefer_single_quotes: false
+    prefer_const_constructors_in_immutables: true

lib/ui/components/cv_flat_button.dart

@@ -1,7 +1,7 @@
 import 'package:flutter/material.dart';
 
 class CVFlatButton extends StatefulWidget {
-  CVFlatButton({
+  const CVFlatButton({
     @required Key key,
     @required this.triggerFunction,
     @required this.buttonText,

lib/ui/components/cv_tab_bar.dart

@@ -4,7 +4,7 @@ class CVTabBar extends StatelessWidget implements PreferredSizeWidget {
   final Color color;
   final TabBar tabBar;
 
-  CVTabBar({this.color, this.tabBar});
+  const CVTabBar({this.color, this.tabBar});
 
   @override
   Size get preferredSize => tabBar.preferredSize;

lib/ui/components/cv_typeahead_field.dart

@@ -25,7 +25,7 @@ class CVTypeAheadField extends StatelessWidget {
   /// When a [TextInputType] is not specified, it defaults to [TextInputType.text]
   ///
   /// When `maxLines` is not specified, it defaults to 1
-  CVTypeAheadField({
+  const CVTypeAheadField({
     Key key,
     @required this.label,
     this.type = TextInputType.text,

lib/ui/views/base_view.dart

@@ -9,7 +9,7 @@ class BaseView<T extends BaseModel> extends StatefulWidget {
   final Function(T) onModelDestroy;
   final T model;
 
-  BaseView({
+  const BaseView({
     @required this.builder,
     this.onModelReady,
     this.onModelDestroy,

lib/ui/views/ib/components/ib_pop_quiz.dart

@@ -8,7 +8,7 @@ class IbPopQuiz extends StatelessWidget {
   final BuildContext context;
   final List<IbPopQuizQuestion> questions;
 
-  IbPopQuiz({this.context, this.questions});
+  const IbPopQuiz({this.context, this.questions});
 
   Widget _buildQuestion(int questionNumber, IbPopQuizQuestion question) {
     var buttonsWidgets = <Widget>[];

lib/ui/views/ib/components/ib_pop_quiz_button.dart

@@ -4,7 +4,7 @@ class IbPopQuizButton extends StatefulWidget {
   final String content;
   final bool isCorrect;
 
-  IbPopQuizButton({
+  const IbPopQuizButton({
     @required this.content,
     @required this.isCorrect,
   });

lib/ui/views/ib/ib_page_view.dart

@@ -38,7 +38,7 @@ class IbPageView extends StatefulWidget {
   final SetPageCallback setPage;
   final IbChapter chapter;
 
-  IbPageView({
+  const IbPageView({
     @required Key key,
     @required this.tocCallback,
     @required this.chapter,