remove refresh on no fileselected

src/app/tabs/analysis-tab.js

@@ -34,6 +34,7 @@ class AnalysisTab extends BaseApi {
       } else if (count === 0) {
         this.events.emit('statusChanged', {key: 'success', title: 'no warning', type: 'success'})
       } else {
+        // count ==-1 no compilation result
         this.events.emit('statusChanged', {key: 'none'})
       }
     })

src/app/tabs/compile-tab.js

@@ -106,7 +106,6 @@ class CompileTab extends CompilerApi {
     this.fileManager.events.on('noFileSelected', () => {
       this.compilerContainer.currentFile = ''
       cleanupErrors()
-      onContentChanged()
     })
 
     const cleanupErrors = () => {

src/app/tabs/compileTab/compilerContainer.js

@@ -100,7 +100,7 @@ class CompilerContainer {
     var displayed = name === '' ? '<no file selected>' : name
     var el = yo`
     <div class="${css.compilerArticle}">
-      <button class="btn btn-primary btn-block" title="Compile" onclick="${this.compile.bind(this)}">
+      <button class="btn btn-primary btn-block ${name === '' ? 'disabled' : ''}" title="Compile" onclick="${this.compile.bind(this)}">
         <span>${this._view.compileIcon} Compile ${displayed}</span>
       </button>
     </div>`