Loading the pages takes too long

[mPokornyETM]

see #558

This changes :

• decreases the loading time for lockable-resources page
• eliminates (partly) concurrent modification issues.
• add new index column in the Queue page

Testing done

Manually tested. See screen shots
before:

after:

The differneces for User are really not vissble (instead of the queue index column) but loading times are rapidly decreased.

I does not have any numbers forcomparasion. But since we use this changes in your Jenkins instance no body call me, why it takes so long. That menas it works ;.) And we have ~ 700 labels.

Proposed upgrade guidelines

N/A

Localizations

All localizations files has been moved, hopefully are still correct

Submitter checklist

• [ ] The Jira / Github issue, if it exists, is well-described.
• The changelog entries and upgrade guidelines are appropriate for the audience affected by the change (users or developers, depending on the change) and are in the imperative mood (see examples).
  • The changelog generator for plugins uses the pull request title as the changelog entry.
  • Fill in the Proposed upgrade guidelines section only if there are breaking changes or changes that may require extra steps from users during the upgrade.
• [ ] There is automated testing or an explanation that explains why this change has no tests.
• New public functions for internal use only are annotated with @NoExternalUse. In case it is used by non java code the Used by {@code <panel>.jelly} Javadocs are annotated.
• [ ] New or substantially changed JavaScript is not defined inline and does not call eval to ease the future introduction of Content Security Policy (CSP) directives (see documentation).
• [ ] For dependency updates, there are links to external changelogs and, if possible, full differentials.
• [ ] For new APIs and extension points, there is a link to at least one consumer.
• Any localizations are transferred to *.properties files.
• [ ] Changes in the interface are documented also as examples.

[mPokornyETM]

This changes will be merged without review with my admin rights.
Because no one of requested reviewer has provide the review over 1 week.
Hopefully is everybody fin with them.