Enable built-in auto-save functionality of DataTables

[uhafner]

Do not use custom serialization anymore when Prototype is not loaded. The new feature requires Jenkins 2.406 or newer. For older versions, the old custom serialization is used.

[codecov]

Codecov Report

Merging #356 (c7c15cf) into master (831d74b) will not change coverage.
The diff coverage is n/a.

@@            Coverage Diff            @@
##             master     #356   +/-   ##
=========================================
  Coverage     73.93%   73.93%           
  Complexity       22       22           
=========================================
  Files             5        5           
  Lines           165      165           
  Branches          6        6           
=========================================
  Hits            122      122           
  Misses           43       43           

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[mPokornyETM]

@uhafner Thx to add me as review. That means I can remove the option 'data-remember-search-text="true"' in lockable-resources-plugin as well. I am not fit with JavaScript, therefore can not really review the changes. Let me test it if it works in my local build and then LGTM ;-)

[uhafner]

@uhafner Thx to add me as review.

It is more meant as FYI.

That means I can remove the option 'data-remember-search-text="true"' in lockable-resources-plugin as well.

Not yet. When I bring this change into production we need to wait until all older Jenkins versions are not supported anymore (will require > one year)...