TASK: Fix broken attributes

src/components/dropdown/dropdown.tsx

@@ -38,24 +38,25 @@ export class Dropdown {
     return (
       <div>
         <neos-form-input-wrapper label={this.label}>
-          <slot name="metadata" slot="metadata"/>
-          <slot name="before" slot="before"/>
-          <div className={this.wrapperClassName()}>
-            <a href="#" className="dropdown" onClick={(e) => this.toggle(e)}>
-              <div className="icon">
+          <slot name="metadata"/>
+          <slot name="before"/>
+          <div class={this.wrapperClassName()}>
+            <a href="#" class="dropdown" onClick={(e) => this.toggle(e)}>
+              <div class="icon">
                 <neos-icon name="file"/>
               </div>
-              <div className="selected-label">{this.activeLabel ? this.activeLabel : this.placeholder}</div>
-              <div className="toggle">
+              <div class="selected-label">{this.activeLabel ? this.activeLabel : this.placeholder}</div>
+              <div class="toggle">
                 <neos-button squared theme="transparent">
                   <neos-icon name="chevron-down" type="solid"></neos-icon>
                 </neos-button>
               </div>
             </a>
-            <div className="dropdown-list">
+            <div class="dropdown-list">
               <slot/>
             </div>
           </div>
+          <slot name="after"/>
         </neos-form-input-wrapper>
       </div>
     );

src/components/form-input/form-input.tsx

@@ -250,8 +250,8 @@ export class FormInput {
     return (
       <label>
         <neos-form-input-wrapper label={this.label}>
-          <slot name="metadata" slot="metadata"/>
-          <slot name="before" slot="before"/>
+          <slot name="metadata"/>
+          <slot name="before"/>
           <input
             ref={input => this.nativeInput = input as any}
             aria-disabled={this.disabled ? 'true' : false}
@@ -283,7 +283,7 @@ export class FormInput {
             onFocus={this.onFocus.bind(this)}
             onKeyDown={this.inputKeydown.bind(this)}
           />
-          <slot name="after" slot="after"/>
+          <slot name="after"/>
         </neos-form-input-wrapper>
       </label>
     );

src/components/inspector-group-header/inspector-group-header.tsx

@@ -37,7 +37,7 @@ export class InspectorGroupHeader {
   render() {
     return (<header
       onMouseEnter={() => this.mouseEnterHandler()}
-      onmouseleave={() => this.mouseLeaveHandler()}
+      onMouseLeave={() => this.mouseLeaveHandler()}
       onClick={() => this.neosVisibilitySwitchedHandlerHandler()}
     >
       <neos-icon squared name={this.icon} type="solid"></neos-icon>