Update gradle and don't explicitly specify buildToolsVersion

Also alphabetically sort dependencies

app/build.gradle

@@ -2,7 +2,6 @@ apply plugin: 'com.android.application'
 
 android {
     compileSdkVersion 27
-    buildToolsVersion '27.0.3'
 
     defaultConfig {
         applicationId "me.impy.aegis"
@@ -29,20 +28,20 @@ android {
 
 dependencies {
     implementation fileTree(dir: 'libs', include: ['*.jar'])
-    implementation 'com.android.support:recyclerview-v7:27.1.1'
-    implementation 'com.android.support:appcompat-v7:27.1.1'
-    implementation 'com.android.support:design:27.1.1'
-    implementation 'de.hdodenhof:circleimageview:2.2.0'
-    implementation 'com.takisoft.fix:preference-v7:27.1.1.1'
     implementation 'com.amulyakhare:com.amulyakhare.textdrawable:1.0.1'
-    implementation 'me.dm7.barcodescanner:zxing:1.9'
+    implementation 'com.android.support:appcompat-v7:27.1.1'
     implementation 'com.android.support:cardview-v7:27.1.1'
-    implementation 'com.github.esafirm.android-image-picker:imagepicker:1.13.0'
-    implementation 'com.github.avito-tech:krop:3e65e12'
+    implementation 'com.android.support:design:27.1.1'
+    implementation 'com.android.support:recyclerview-v7:27.1.1'
     implementation 'com.android.support:support-v4:27.1.1'
-    implementation 'com.mattprecious.swirl:swirl:1.0.0'
-    implementation 'com.madgag.spongycastle:core:1.58.0.0'
-    implementation 'com.github.apl-devs:appintro:v4.2.2'
     implementation 'com.getbase:floatingactionbutton:1.10.1'
+    implementation 'com.github.apl-devs:appintro:v4.2.2'
+    implementation 'com.github.avito-tech:krop:3e65e12'
+    implementation 'com.github.esafirm.android-image-picker:imagepicker:1.13.0'
+    implementation 'com.madgag.spongycastle:core:1.58.0.0'
+    implementation 'com.mattprecious.swirl:swirl:1.0.0'
+    implementation 'com.takisoft.fix:preference-v7:27.1.1.1'
+    implementation 'de.hdodenhof:circleimageview:2.2.0'
+    implementation 'me.dm7.barcodescanner:zxing:1.9'
     testImplementation 'junit:junit:4.12'
 }

build.gradle

@@ -6,7 +6,7 @@ buildscript {
         google()
     }
     dependencies {
-        classpath 'com.android.tools.build:gradle:3.1.2'
+        classpath 'com.android.tools.build:gradle:3.1.4'
 
         // NOTE: Do not place your application dependencies here; they belong
         // in the individual module build.gradle files