Facilitate installation of scripts from the repository

This commit includes:
* removal of page_info_server
* running of storage client in popup context
* extraction of some common CSS to a separate file
* extraction of scripts import view to a separate file
* addition of a facility to conveniently clone complex structures from DOM (in DOM_helpers.js)
* addition of hydrilla repo url to default settings
* other minor changes
and of course changes related to the actual installation of scripts from the repo

1 files changed, 41 insertions, 0 deletions

diff --git a/html/DOM_helpers.js b/html/DOM_helpers.js
new file mode 100644
index 0000000..2bff966
--- /dev/null
+++ b/html/DOM_helpers.js
@@ -0,0 +1,41 @@
+/**
+ * Hachette operations on DOM elements
+ *
+ * Copyright (C) 2021 Wojtek Kosior
+ * Redistribution terms are gathered in the `copyright' file.
+ */
+
+function by_id(id)
+{
+    return document.getElementById(id);
+}
+
+function clone_template(template_id)
+{
+    const clone = document.getElementById(template_id).cloneNode(true);
+    const result_object = {};
+    const to_process = [clone];
+
+    while (to_process.length > 0) {
+	const element = to_process.pop();
+	const template_key = element.getAttribute("data-template");
+
+	if (template_key)
+	    result_object[template_key] = element;
+
+	element.removeAttribute("id");
+	element.removeAttribute("template_key");
+
+	for (const child of element.children)
+	    to_process.push(child);
+    }
+
+    return result_object;
+}
+
+/*
+ * EXPORTS_START
+ * EXPORT by_id
+ * EXPORT clone_template
+ * EXPORTS_END
+ */