Use JitPack also for gerrit-rest-java-client artifacts

Our required httpclient-android branch usually is not published as an
artifact, so use JitPack to build it on demand. This way we can get rid of
the committed library JAR, and remove the legacy build system code to look
for JARs in the "libs" directory.

Change-Id: I7aecd0ccc64b0dd1a2eff93f7bec1719de521883

app/build.gradle

diff --git a/app/build.gradle b/app/build.gradle
index 645ce2b..9090a8a 100644
--- a/app/build.gradle
+++ b/app/build.gradle
@@ -21,11 +21,9 @@
 }
 
 dependencies {
-    compile fileTree(include: ['*.jar'], dir: 'libs')
     testCompile 'junit:junit:4.12'
-    compile files('libs/gerrit-rest-java-client-0.8.8-SNAPSHOT.jar')
+    compile 'com.github.uwolfer:gerrit-rest-java-client:a7f5d5c'
     compile 'com.google.guava:guava:19.0'
-    compile 'org.apache.httpcomponents:httpclient-android:4.3.5.1'
     compile 'com.google.code.gson:gson:2.6.2'
     compile 'com.android.support:appcompat-v7:23.1.1'
     compile 'com.android.support:design:23.1.1'

app/libs/gerrit-rest-java-client-0.8.8-SNAPSHOT.jar

diff --git a/app/libs/gerrit-rest-java-client-0.8.8-SNAPSHOT.jar b/app/libs/gerrit-rest-java-client-0.8.8-SNAPSHOT.jar
deleted file mode 100644
index 3758760..0000000
--- a/app/libs/gerrit-rest-java-client-0.8.8-SNAPSHOT.jar
+++ /dev/null
Binary files differ

build.gradle

diff --git a/build.gradle b/build.gradle
index 6b2c1b2..37df852 100644
--- a/build.gradle
+++ b/build.gradle
@@ -26,6 +26,10 @@
 allprojects {
     repositories {
         jcenter()
+
+        maven {
+            url 'https://jitpack.io'
+        }
     }
 }