Huge refactor for better maintainability

mobile/src/main/java/be/mygod/vpnhotspot/widget/AutoCollapseTextView.kt

@@ -0,0 +1,15 @@
+package be.mygod.vpnhotspot.widget
+
+import android.content.Context
+import android.support.v7.widget.AppCompatTextView
+import android.util.AttributeSet
+import android.view.View
+
+class AutoCollapseTextView @JvmOverloads constructor(context: Context, attrs: AttributeSet? = null,
+                                                     defStyleAttr: Int = android.R.attr.textViewStyle) :
+        AppCompatTextView(context, attrs, defStyleAttr) {
+    override fun onTextChanged(text: CharSequence?, start: Int, lengthBefore: Int, lengthAfter: Int) {
+        super.onTextChanged(text, start, lengthBefore, lengthAfter)
+        visibility = if (text.isNullOrEmpty()) View.GONE else View.VISIBLE
+    }
+}