Tidy gradle, gitignore and revert docker images

.circleci/config.yml

@@ -5,7 +5,7 @@ jobs:
 
   build:
     docker:
-      - image: circleci/openjdk:8-jdk
+      - image: circleci/openjdk:8-jdk-browsers
     steps:
       - checkout
       # If changing build tools be sure to update GeneratorSetup.md in docs
@@ -27,7 +27,7 @@ jobs:
 
   release:
     docker:
-      - image: circleci/openjdk:8-jdk
+      - image: circleci/openjdk:8-jdk-browsers
     steps:
       - checkout
       # If changing build tools be sure to update GeneratorSetup.md in docs

.gitignore

@@ -16,9 +16,8 @@ target/
 
 # Ignore Gradle project-specific cache directory
 .gradle/
-build/generator/out/
-schemas/out/
+gradle/
 generator/build/
 generator/out/
 schemas/build/
-gradle/
+schemas/out/

generator/build.gradle

@@ -39,8 +39,7 @@ task release(type: Jar) {
 	manifest {
 		attributes 'Created-By': 'Scott Logic',
 			'Implementation-Version': version != null ? version : "0.0",
-			'Built-By': System.properties['user.name'],
-			'Main-Class': 'com.scottlogic.deg.generator.App'
+			'Built-By': System.properties['user.name']
 	}
 
 	from { configurations.compile.collect { it.isDirectory() ? it : zipTree(it) } }