chore(build): cp non-js to _build

Also created .editorconfig & renamed css files in client dir to match their output name.
#1569

Makefile

@@ -202,7 +202,9 @@ lint:
 
 _build:
 	mkdir $@
-
+	cp -pR $(SRC-DIR)/placeholders $@
+	cp $(SRC-DIR)/*.css $@
+	cp $(SRC-DIR)/*.gif $@
 
 build-dnd-standalone: _build
 	$(NPM-BIN)/uglifyjs $(DND-FILES) -o $(BUILD-OUT-DIR)/dnd.js -b -e window:global --source-map $(BUILD-OUT-DIR)/dnd.js.map -p relative

test/dev/index.html

@@ -202,9 +202,9 @@
         <title>Fine Uploader Development</title>
         <meta charset="utf-8" />
         <link href="https://netdna.bootstrapcdn.com/twitter-bootstrap/2.1.0/css/bootstrap.min.css" rel="stylesheet" type="text/css"/>
-        <link href="../../client/fineuploader-gallery.css" rel="stylesheet" type="text/css"/>
-        <link href="../../client/fineuploader-new.css" rel="stylesheet" type="text/css"/>
-        <!--<link href="../../client/fineuploader.css" rel="stylesheet" type="text/css"/>-->
+        <link href="../../_build/fine-uploader-gallery.css" rel="stylesheet" type="text/css"/>
+        <link href="../../_build/fine-uploader-new.css" rel="stylesheet" type="text/css"/>
+        <!--<link href="../../_build/fine-uploader.css" rel="stylesheet" type="text/css"/>-->
         <link href="styles.css" rel="stylesheet" type="text/css"/>
         <script src="../../_build/all.fine-uploader.js"></script>
         <script src="../../node_modules/pica/dist/pica.js"></script>