[Misc] Fix location of template resources in platform-web-templates to be consistent with other templates in other modules. Also makes the PageTest setup simpler, and makes way for flamingo skin templates.

XWIKI-18611: "Attach" and "Cancel" buttons are displayed in Attachment Tab when canceling in-place edit mode
* The Attachments tab can be reloaded so we shouldn't remove the listener.

* Fix typo
* Mark the loading state immediately but show it with a delay in order to reduce the perceived loading time
* Use camel-case for event names

* Improve translation keys and messages
* Add missing translation keys
* Remove top bar bottom margin because we have the loader now that takes some space
* Remove leftover console.log()
* Fix responsive mode after merge
* Add hint for column resize and reorder
* Show a background-color on hover for the column resize handler
* Hide the column resize handler on responsive mode

When ctrl key is pressed, open link in new window / tab in tree.js event listener

* Also fix broken Box macro links
* Remove all links pointing to platform.xwiki.org since it's been deprecated a long time ago

* XWIKI-18556: Rights UI only display rights with the proper case
- In the UI JavaScript, convert the rights to lowercase before comparing them with the
  reference rights ('admin', 'view', etc.)

Currently translated at 100.0% (27 of 27 strings)

Translation: XWiki Platform/Like UI
Translate-URL: https://l10n.xwiki.org/projects/xwiki-platform/like-ui/ru/

Currently translated at 100.0% (20 of 20 strings)

Translation: XWiki Platform/Mentions UI
Translate-URL: https://l10n.xwiki.org/projects/xwiki-platform/mentions-ui/ru/

Currently translated at 100.0% (9 of 9 strings)

Translation: XWiki Platform/XWiki.EditTranslations
Translate-URL: https://l10n.xwiki.org/projects/xwiki-platform/xwiki-edittranslations/ru/

Currently translated at 100.0% (27 of 27 strings)

Translation: XWiki Platform/XWiki WikiMacro Store
Translate-URL: https://l10n.xwiki.org/projects/xwiki-platform/xwiki-wikimacro-store/ru/

Currently translated at 100.0% (179 of 179 strings)

Translation: XWiki Platform/XWiki.Notifications.Code.Translations
Translate-URL: https://l10n.xwiki.org/projects/xwiki-platform/xwiki-notifications-code-translations/ru/

Currently translated at 100.0% (67 of 67 strings)

Translation: XWiki Platform/AnnotationCode.Translations
Translate-URL: https://l10n.xwiki.org/projects/xwiki-platform/annotationcode-translations/ru/

Currently translated at 99.9% (4390 of 4391 strings)

Translation: XWiki Platform/XWiki Core Resources
Translate-URL: https://l10n.xwiki.org/projects/xwiki-platform/xwiki-core-resources/ru/

[Misc] Split xwiki-platform-web into 2 modules: xwiki-platform-web-templates and xwiki-platform-web-war. Rationale: be able to write integration tests for templates more easily (by depending on the new template module rather than having to unpack the WAR, and use a modified velocity engine to read templates from local files)
* Fix more places...

[Misc] Split xwiki-platform-web into 2 modules: xwiki-platform-web-templates and xwiki-platform-web-war. Rationale: be able to write integration tests for templates more easily (by depending on the new template module rather than having to unpack the WAR, and use a modified velocity engine to read templates from local files)
* Update artifact id used in java code

[Misc] Split xwiki-platform-web into 2 modules: xwiki-platform-web-templates and xwiki-platform-web-war. Rationale: be able to write integration tests for templates more easily (by depending on the new template module rather than having to unpack the WAR, and use a modified velocity engine to read templates from local files)
* Fix missing dependency