Add a repository to get the test deps from.

Tidy up .gitignore.

Change-Id: Iaab43f6e475d834644a5c18a983a24679874df52
Reviewed-on: http://gerrit.dmdirc.com/3913
Reviewed-by: Greg Holmes <greg@dmdirc.com>
Automatic-Compile: DMDirc Build Manager

.gitignore

@@ -4,8 +4,5 @@
 /build/
 /dist
 /lib/*.jar
-build-before-profiler.xml
-/nbproject/profiler-build-impl.xml
-/nbproject/genfiles.properties
-/nbproject/private
 /nexus-teamcity.gradle
+/.gradle

build.gradle

@@ -24,6 +24,8 @@ sourceSets {
 sourceCompatibility = 1.7
 targetCompatibility = 1.7
 
+repositories.mavenCentral()
+
 dependencies {
     testCompile group: 'junit', name: 'junit', version: '4.+'
     testCompile group: 'org.mockito', name: 'mockito-all', version: '1.+'