changed AccountActivity so that it shows FAB that allows a user to un/follow a user from it instead of the menu

added an xml svg for unfollowing someone
removed the useless line from build.gradle that I added in the last pull

app/build.gradle

@@ -44,7 +44,6 @@ dependencies {
     compile 'com.jakewharton:butterknife:8.4.0'
     compile 'com.google.firebase:firebase-messaging:10.0.1'
     compile 'com.google.firebase:firebase-crash:10.0.1'
-    compile 'com.github.bluzwong:swipeback:0.2.0@aar'
     testCompile 'junit:junit:4.12'
     annotationProcessor 'com.jakewharton:butterknife-compiler:8.4.0'
 }

app/src/main/java/com/keylesspalace/tusky/AccountActivity.java

@@ -294,14 +294,27 @@ public class AccountActivity extends BaseActivity {
 
         final FloatingActionButton floatingBtn = (FloatingActionButton) findViewById(R.id.floating_btn);
 
-        if(!isSelf && !blocking && !following) {
+        if(!isSelf && !blocking) {
             floatingBtn.show();
-            floatingBtn.setImageResource(R.drawable.ic_person_add_24dp);
+
+            if (following) {
+                floatingBtn.setImageResource(R.drawable.ic_person_minus_24px);
+            } else {
+                floatingBtn.setImageResource(R.drawable.ic_person_add_24dp);
+            }
+
             floatingBtn.setOnClickListener(new View.OnClickListener() {
                 @Override
                 public void onClick(View v) {
+
                     follow(accountId);
-                    floatingBtn.hide();
+
+                    if (following) {
+                        floatingBtn.setImageResource(R.drawable.ic_person_minus_24px);
+                    } else {
+                        floatingBtn.setImageResource(R.drawable.ic_person_add_24dp);
+                    }
+
                 }
             });
         }

app/src/main/res/drawable/ic_person_minus_24px.xml

@@ -0,0 +1,12 @@
+<?xml version="1.0" encoding="utf-8"?>
+<vector xmlns:android="http://schemas.android.com/apk/res/android"
+    android:width="24dp"
+    android:height="24dp"
+    android:viewportWidth="24"
+    android:viewportHeight="24">
+
+    <path
+        android:fillColor="@color/toolbar_icon_dark"
+        android:pathData="M14.4,12c2.7,0.4,5-1.9,4.6-4.6c-0.3-1.7-1.6-3.1-3.3-3.3c-2.7-0.4-5,1.9-4.6,4.6C11.3,10.3,12.7,11.7,14.4,12z
+M6,12h3v-2H6H4H1v2h3H6z M15,14c-2.7,0-8,1.3-8,4v2h16v-2C23,15.3,17.7,14,15,14z" />
+</vector>