Only register Maps plugin when allowed to use Talk

[nickvergessen]

🖼️ Screenshots

🏚️ Before	🏡 After
Clicking results in 403	No click, no error

Steps

• Requires usage of stable25 as maps does not work in master yet
• Apply following patch to work around [Bug]: Maps and Talk not compatible maps#947

diff --git a/lib/Files/TemplateLoader.php b/lib/Files/TemplateLoader.php
index c129c1854..297a214ae 100644
--- a/lib/Files/TemplateLoader.php
+++ b/lib/Files/TemplateLoader.php
@@ -95,7 +95,9 @@ class TemplateLoader implements IEventListener {
 
 		Util::addStyle(Application::APP_ID, 'At');
 		Util::addStyle(Application::APP_ID, 'icons');
-		Util::addScript(Application::APP_ID, 'talk-files-sidebar');
+		if (strpos(\OC::$server->getRequest()->getPathInfo(), '/apps/maps') !== 0)
+			Util::addScript(Application::APP_ID, 'talk-files-sidebar');
+		}
 
 		if ($user instanceof IUser) {
 			$this->publishInitialStateForUser($user, $this->rootFolder, $this->appManager);

• Restrict usage of talk to a group you are not a member of
• Go to the maps app
• Rightclick

🏁 Checklist

• ⛑️ Tests (unit and/or integration) are included
• 📘 API documentation in docs/ has been updated or is not required
• 📗 User documentation in https://github.com/nextcloud/documentation/tree/master/user_manual/talk has been updated or is not required
• 🔖 Capability is added or not needed

[tacruc]

Looks good to me.

[nickvergessen]

/backport to stable25