[feat] remove dependency on shared resources

Update bootstrap to v3.4.1 and jQuery to 1.12.4

- load all frontend dependencies with npm
- automate frontend build in gulpfile
- integrate npm and gulp build into maven
- remove $shared route from controller
- replace ACE editor with prismjs for highlighting code
- bundle dbutil module from shared resources
- use bundled copy of dbutil in scan module
- remove non-existing and unused site module from view.xql
- bundle all fonts, images and styles previously included from
  shared resources package
- remove dependency on shared-resources from repo.xml

gulpfile.js

@@ -0,0 +1,111 @@
+/**
+ * an example gulpfile to make ant-less existdb package builds a reality
+ */
+const { src, dest, series, parallel } = require("gulp");
+const del = require("delete");
+// const gulpEsbuild = require("gulp-esbuild");
+
+const paths = {
+  input: "src/main/xar-resources/resources",
+  output: "target/generated-resources/frontend/xar-resources/resources/",
+  images: {
+    input: "src/main/xar-resources/resources/img/*",
+    output: "target/generated-resources/frontend/xar-resources/resources/img/",
+  },
+  scripts: {
+    input: "src/main/xar-resources/resources/scripts/*",
+    output:
+      "target/generated-resources/frontend/xar-resources/resources/scripts/",
+  },
+  styles: {
+    input: "src/main/xar-resources/resources/css/*",
+    output: "target/generated-resources/frontend/xar-resources/resources/css/",
+  },
+  fonts: {
+    input: "src/main/xar-resources/resources/fonts/*",
+    output:
+      "target/generated-resources/frontend/xar-resources/resources/fonts/",
+  },
+  vendor: {
+    scripts: [
+      "src/main/xar-resources/resources/vendor/scripts/*",
+      "node_modules/bootstrap/dist/js/bootstrap.min.*",
+      "node_modules/jquery/dist/jquery.min.*",
+      "node_modules/prismjs/prism.js",
+      "node_modules/prismjs/components/prism-xquery.min.js",
+      "node_modules/prismjs/components/prism-java.min.js",
+    ],
+    styles: [
+      "src/main/xar-resources/resources/vendor/styles/*",
+      "node_modules/bootstrap/dist/css/bootstrap.min.*",
+      // 'node_modules/prismjs/themes/*.css'
+    ],
+    fonts: ["node_modules/bootstrap/dist/fonts/*"],
+  },
+};
+
+/**
+ * Use the `delete` module directly, instead of using gulp-rimraf
+ */
+function clean(cb) {
+  del(paths.output, cb);
+}
+exports.clean = clean;
+
+function styles() {
+  return src(paths.styles.input).pipe(dest(paths.styles.output));
+}
+exports.styles = styles;
+
+/**
+ * minify EcmaSript files and put them into 'build/app/js'
+ */
+function minifyEs() {
+  return (
+    src(paths.scripts.input)
+      // .pipe(gulpEsbuild())
+      .pipe(dest(paths.scripts.output))
+  );
+}
+exports.minify = minifyEs;
+
+// copy fonts
+function copyFonts() {
+  return src(paths.fonts.input).pipe(
+    dest(paths.fonts.output)
+  );
+}
+
+// copy vendor scripts
+function copyVendorScripts() {
+  return src(paths.vendor.scripts).pipe(dest(paths.scripts.output));
+}
+
+// copy vendor Styles
+function copyVendorStyles() {
+  return src(paths.vendor.styles).pipe(dest(paths.styles.output));
+}
+
+// copy vendor fonts
+function copyVendorFonts() {
+  return src(paths.vendor.fonts).pipe(
+    dest(paths.fonts.output)
+  );
+}
+
+/**
+ * copy vendor scripts, styles and fonts
+ */
+const copyStatic = parallel(copyFonts, copyVendorFonts, copyVendorScripts, copyVendorStyles);
+// exports.copy = copyStatic;
+
+// ///////////////// //
+//  composed tasks   //
+// ///////////////// //
+
+const build = series(clean, styles, minifyEs, copyStatic);
+
+exports.build = build;
+
+// main task for day to day development
+exports.default = build;