Tweak section header & profile pic widget (#90)

lib/screens/settings/sections/chat_settings.dart

@@ -64,7 +64,6 @@ class _ChatSettingsState extends State<ChatSettings> {
           ),
           const SectionHeader(
             'Layout',
-            fontSize: 12.0,
             padding: sectionPadding,
           ),
           SwitchListTile.adaptive(
@@ -113,7 +112,6 @@ class _ChatSettingsState extends State<ChatSettings> {
           ),
           const SectionHeader(
             'Emotes',
-            fontSize: 12.0,
             padding: sectionPadding,
           ),
           SwitchListTile.adaptive(
@@ -125,7 +123,6 @@ class _ChatSettingsState extends State<ChatSettings> {
           ),
           const SectionHeader(
             'Message Appearance',
-            fontSize: 12.0,
             padding: sectionPadding,
           ),
           SwitchListTile.adaptive(
@@ -166,7 +163,6 @@ class _ChatSettingsState extends State<ChatSettings> {
           ),
           const SectionHeader(
             'Message Sizing',
-            fontSize: 12.0,
             padding: sectionPadding,
           ),
           ExpansionTile(

lib/widgets/profile_picture.dart

@@ -21,14 +21,13 @@ class ProfilePicture extends StatelessWidget {
       future: context.read<TwitchApi>().getUser(userLogin: userLogin, headers: context.read<AuthStore>().headersTwitch),
       builder: (context, AsyncSnapshot<UserTwitch> snapshot) {
         return AnimatedOpacity(
+          opacity: snapshot.hasData ? 1 : 0,
           duration: const Duration(milliseconds: 500),
-          opacity: snapshot.connectionState == ConnectionState.done && snapshot.hasData ? 1.0 : 0.0,
+          curve: Curves.easeIn,
           child: CircleAvatar(
             radius: radius,
             backgroundColor: Colors.transparent,
-            foregroundImage: snapshot.connectionState == ConnectionState.done && snapshot.hasData
-                ? CachedNetworkImageProvider(snapshot.data!.profileImageUrl)
-                : null,
+            foregroundImage: snapshot.hasData ? CachedNetworkImageProvider(snapshot.data!.profileImageUrl) : null,
           ),
         );
       },

lib/widgets/section_header.dart

@@ -19,7 +19,6 @@ class SectionHeader extends StatelessWidget {
       child: Text(
         text.toUpperCase(),
         style: TextStyle(
-          color: DefaultTextStyle.of(context).style.color?.withOpacity(0.8),
           fontSize: fontSize,
           fontWeight: FontWeight.w600,
           letterSpacing: 0.5,