Enable uglification by default

Also add new options to disable uglification and source maps
generation

Change-Id: I4c458abbf8bff9b9783c0cf0b46b45a96803101f
Partial-Bug: #1517028

docs/develop/nailgun/development/env.rst

@@ -267,6 +267,11 @@ Running Nailgun in Fake Mode
 
       gulp build --static-dir=static_compressed
 
+    To speed up build process you may also want to disable uglification and
+    source maps generation::
+
+      gulp build --no-uglify --no-sourcemaps
+
   * If you plan to modify Fuel UI, there is more convenient option --
     a development server. It watches for file changes and automatically
     rebuilds changed modules (significantly faster than full rebuild)

nailgun/gulpfile.js

@@ -157,7 +157,7 @@ gulp.task('license', function(cb) {
         if (errors.length) {
             _.each(errors, function(error) {
                 gutil.log(gutil.colors.red(error.libraryName, 'has', error.license, 'license'));
-            })
+            });
             cb('Issues with licenses found');
         } else {
             cb();
@@ -276,11 +276,18 @@ gulp.task('build', function(cb) {
             new webpack.optimize.DedupePlugin()
         );
     }
-    if (argv.uglify) {
+    if (argv.uglify !== false) {
+        config.devtool = 'source-map';
         config.plugins.push(
-            new webpack.optimize.UglifyJsPlugin({compress: {warnings: false}})
+            new webpack.optimize.UglifyJsPlugin({
+                mangle: false,
+                compress: {warnings: false}
+            })
         );
     }
+    if (argv.sourcemaps === false) {
+        delete config.devtool;
+    }
     if (argv.watch) {
         config.watch = true;
     }

run_tests.sh

@@ -270,15 +270,12 @@ function run_ui_func_tests {
   pushd $ROOT/nailgun >> /dev/null
 
   if [ $no_ui_compression -ne 1 ]; then
-    echo -n "Compressing UI... "
-    local output
-    output=$(${GULP} build --static-dir=$COMPRESSED_STATIC_DIR 2>&1)
+    echo "Compressing UI... "
+    ${GULP} build --no-sourcemaps --static-dir=$COMPRESSED_STATIC_DIR
     if [ $? -ne 0 ]; then
-      echo "$output"
       popd >> /dev/null
       return 1
     fi
-    echo "done"
   else
     echo "Using compressed UI from $COMPRESSED_STATIC_DIR"
     if [ ! -f "$COMPRESSED_STATIC_DIR/index.html" ]; then