Add option to disable opening a browser window when double-clicking the "URL" column in EntryView.cpp

[libklein]

This pull request introduces a new configuration option, OpenURLOnDoubleClick, which allows users to open URLs by double-clicking on the "URL" column.
This changes the behavior as follows:

• Double-clicking the "URL" column of an entry will open a new browser window unless explicitly configured not to.
• In this case, double-clicking defaults to the "default" action (i.e., editing).
• Also changed the double-clicking behavior when no URL is configured. This previously did nothing, but now falls back to editing the entry - regardless of whether the new setting is enabled or not.

The setting can be configured in the "General" tab:

Fixes: #11327

Testing strategy

Tested locally.

Type of change

• ✅ New feature (change that adds functionality)

[droidmonkey]

Please move the setting up a couple spots right under the "double click field" setting and use the wording: "Open browser on double clicking URL field in entry view"

Also fix the tab ordering

[libklein]

Please move the setting up a couple spots right under the "double click field" setting and use the wording: "Open browser on double clicking URL field in entry view"

Done.

Also fix the tab ordering

Sorry, the tab ordering? What are you referring to?

[droidmonkey]

Just for reference:

I fixed it for you and updated translations