Update material-dialogs dependency

Closes #4103
// FREEBIE

build.gradle

@@ -29,6 +29,9 @@ repositories {
     maven { // textdrawable
         url 'https://dl.bintray.com/amulyakhare/maven'
     }
+    maven { // material-dialogs
+        url "https://jitpack.io"
+    }
     jcenter()
     mavenLocal()
 }
@@ -110,7 +113,7 @@ dependencyVerification {
             'com.makeramen:roundedimageview:1f5a1865796b308c6cdd114acc6e78408b110f0a62fc63553278fbeacd489cd1',
             'com.pnikosis:materialish-progress:d71d80e00717a096784482aee21001a9d299fec3833e4ebd87739ed36cf77c54',
             'de.greenrobot:eventbus:61d743a748156a372024d083de763b9e91ac2dcb3f6a1cbc74995c7ddab6e968',
-            'com.afollestad:material-dialogs:c17205f0d300baa307599c428a5473a6659684c94a5f68ae3c2b84b5e4741172',
+            'com.afollestad:material-dialogs:624dffff240533ca69414464f416c81c88c5c29689bb169093b9a333104f2471',
             'pl.tajchert:waitingdots:2835d49e0787dbcb606c5a60021ced66578503b1e9fddcd7a5ef0cd5f095ba2c',
             'com.soundcloud.android:android-crop:ffd4b973cf6e97f7d64118a0dc088df50e9066fd5634fe6911dd0c0c5d346177',
             'com.android.support:appcompat-v7:9a2355537c2f01cf0b95523605c18606b8d824017e6e94a05c77b0cfc8f21c96',