implement Default traits

src/app/browser/window/tab/item/page/search/form/input.rs

@@ -10,6 +10,12 @@ pub struct Input {
     pub entry: Entry,
 }
 
+impl Default for Input {
+    fn default() -> Self {
+        Self::new()
+    }
+}
+
 impl Input {
     // Constructors
 

src/app/browser/window/tab/item/page/search/form/navigation.rs

@@ -22,6 +22,12 @@ pub struct Navigation {
     model: RefCell<Model<(TextIter, TextIter)>>,
 }
 
+impl Default for Navigation {
+    fn default() -> Self {
+        Self::new()
+    }
+}
+
 impl Navigation {
     // Constructors
 

src/app/browser/window/tab/item/page/search/form/navigation/back.rs

@@ -4,6 +4,12 @@ pub struct Back {
     pub button: Button,
 }
 
+impl Default for Back {
+    fn default() -> Self {
+        Self::new()
+    }
+}
+
 impl Back {
     // Constructors
 

src/app/browser/window/tab/item/page/search/form/navigation/forward.rs

@@ -4,6 +4,12 @@ pub struct Forward {
     pub button: Button,
 }
 
+impl Default for Forward {
+    fn default() -> Self {
+        Self::new()
+    }
+}
+
 impl Forward {
     // Constructors
 

src/app/browser/window/tab/item/page/search/form/result.rs

@@ -6,6 +6,12 @@ pub struct Result {
     pub label: Label,
 }
 
+impl Default for Result {
+    fn default() -> Self {
+        Self::new()
+    }
+}
+
 impl Result {
     // Constructors
 

src/app/browser/window/tab/item/page/search/placeholder.rs

@@ -6,6 +6,12 @@ pub struct Placeholder {
     pub label: Label,
 }
 
+impl Default for Placeholder {
+    fn default() -> Self {
+        Self::new()
+    }
+}
+
 impl Placeholder {
     // Constructors