Spanish translation update

Related to the following tasks in the sprint backlog:
Code Smell JabRef#4
Code Smell JabRef#5
Code Smell JabRef#6

Corresponding to the following tasks from the sprint backlog:
-Design Pattern JabRef#4
-Design Pattern JabRef#5
-Design Pattern JabRef#6

…ubgroups (#9286)

* Closes issue #1, opens issues #3, #4

* Adjusted removeGroupNoSubgroups to keep consistent with other removeGroup__ methods

* Update context menu each time it is opened, to reflect any changes that may have been made to subgroups
Adjusted removeSubgroups.setOnAction to be consistent with other action events

* Update CHANGELOG.md

* Removed "Remove subgroups" and "Sort subgroups" options when no subgroups present

* Removed context submenu addition from event listener

* Fixed JavaDoc for removeGroupNoSubgroups

* Added remove text to language file

* Fixed popup when deleting group with no subgroups

Co-authored-by: Christoph <siedlerkiller@gmail.com>

fix import style errors

* Adds feature CleanupJob for removing non-existent files (#2)

* feat: RemoveLinksToNotExistentFiles.java

* feat: added option to cleanup entries

* feat: improved cleanup entry dialogue

* Test: implements test for linked files which exist

Implementation of a test which calls the cleanup functionality of
RemoveLinksToNotExistentFiles with a entry that is linked to an existing
file. The test makes sure that no changes are made since the linked
file exists.

* Refactor: refactored test to match the standard of the project

Removed the JavaDoc comment from the test, since other tests in the
project don't have JavaDoc:s. Also removed test from the name of the
test function, as it seems that the standard way of naming tests
is to not have test in the testfunctions name.

* Refactor: removed system.out.print()

Removed an print from the tests.

* fix: non english character deleted

* Docs: Added information about changes

Added information about the changes made for solving issue#10929
to the CHANGES.md file.

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* Fix: Removes unused imports and solves other errors

Removes unused imports and solves the error of language keys
that were not in the english laguage file.

* Fix: Removes empty line and solves other issues

Removes an empty line where 2 empty lines appear in after each
other. Also adds brackets to URL and removes an key which is
not in the english language file and was missed in the last commit.

* Docs: Removes technicality from changelog

Removes technical details for the change made in changelog and also
follows the suggestion for removing the space and brackets between
the link and the issue.

* test: enhanced RemoveLinksToNotExistentFilesTest (#3)

* test: enhanced RemoveLinksToNotExistentFilesTest

* test: add real content

* test: change structure

* test: added expectedChanges

* test: added a third test to RemoveLinksToNotExistentFilesTest

* refactor: removed unnecessary toString

* style: removed a whitespace

* refactor: checkstyle formatting.

formatted files according to checkstyle plugin.

---------



* Resolve request changes (#4)

* test: enhanced RemoveLinksToNotExistentFilesTest

* test: add real content

* test: change structure

* test: added expectedChanges

* test: added a third test to RemoveLinksToNotExistentFilesTest

* refactor: removed unnecessary toString

* style: removed a whitespace

* refactor: checkstyle formatting.

formatted files according to checkstyle plugin.

* refactor: replaced .get(0) with .getFirst() for first accessing element of List.

Changed was required from ./gradlew rewriteDryRun

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* Resolve more request changes and warnings (#5)

* Reverse the condition and the content in RemoveLinksToNotExistentFiles

Resolves comment
 "Reverse the condition and the content.

Reason: You have BOTH (true and false) cases covered. The true case should normally come first."

* Fix: Store bibFolder.resolve("test.bib") in a variable

* Refactor: Rename variable fileFolder to originalFileFolder and remove comment.

* Refactor: Rename defaultFileFolder to newFileFolder

* Refactor: Fix indentation in RemoveLinksToNotExistentFilesTest

* Refactor: Replaced Arrays.asList() with List.of()

* Refactor: Replaced Arrays.asList() with List.of()

* Refactor: Change to use java.nio for file deletion.

* Refactor: Move comment to line above.

* Refactor: Added "PDF" as third argument to LinkedFile for OnlineLink files

* Refactor: Removed unused variables in RemoveLinksToNotExistentFiles

* Refactor: Throw IOException in RemoveLinksToNotExistentFilesTest functions

* Refactor: Tests assert using List.of() in RemoveLinksToNotExistentFilesTest

* Refactor: Corrected Arguments for LinkedFile in RemoveLinksToNotExistentFilesTest

* Refactor: Class fields into local variables

This refactor fixed 3 warnings.

* docs: updated docs to remove merge conflict

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Co-authored-by: karlsb <36365664+karlsb@users.noreply.github.com>
Co-authored-by: burcukilic <94201593+burcukilic@users.noreply.github.com>