js: add ogStorage to prevent localStorage key collission

Define ogStorage class to manage the localStorage operations.
The new keys are constructed with the following structure:
"group-context-id"
Where group is either "show" for the collapsed items in the
sidebar, or "check" for the selected checkboxes of the sidebar.

Add sotrage versioning to delete obsolete localStorage when a
new design for the storage is included in ogCP.

1 files changed, 1 insertions, 1 deletions

diff --git a/ogcp/templates/images.html b/ogcp/templates/images.html
index 7a16a0d..06d614a 100644
--- a/ogcp/templates/images.html
+++ b/ogcp/templates/images.html
@@ -14,7 +14,7 @@
     // in the scope
     document.addEventListener('readystatechange', () => {
         if (document.readyState === 'complete') {
-            keepTreeState('#servers');
+            keepTreeState('#servers', 'images');
             keepSelectedClients('images');
             checkOnChange('image-server');
         }