Do not remove numbers from the beginning of each citation

[bozana]

Remove this part of the code https://github.com/pkp/pkp-lib/blob/stable-3_4_0/classes/citation/CitationListTokenizerFilter.php#L59-L62, that removes numbers from the beginning of each citation.
S. https://forum.pkp.sfu.ca/t/if-a-reference-list-item-starts-with-a-numeral-it-is-removed-3-1-2-4-and-3-3-0-15/87845.
This way the correct citations that start with a number will be correctly reprocessed and displayed. For the others, that this part of the code tries to solve: actually the editor is responsible for entering the correct citations and not for example a numbered list.

PRs:
stable-3_3_0:

• Do not remove numbers from the beginning of each citation: #9983
• pkp/pkp-lib#9946 submodule udpate ##bozana/9946-3_3_0## ojs#4288 (only submodule update)
• pkp/pkp-lib#9946 submodule udpate ##bozana/9946-3_3_0## omp#1573 (only submodule update)
• pkp/pkp-lib#9946 submodule udpate ##bozana/9946-3_3_0## ops#688 (only submodule update)

stable-3_4_0:

• pkp/pkp-lib#9946 Do not remove numbers from the beginning of each cit… #10002
• pkp/pkp-lib#9946 submodule udpate ##bozana/9946-3_4_0## ojs#4291 (only submodule update)
• pkp/pkp-lib#9946 submodule udpate ##bozana/9946-3_4_0## omp#1577 (only submodule update)
• pkp/pkp-lib#9946 submodule udpate ##bozana/9946-3_4_0## ops#692 (only submodule update)

main:

• pkp/pkp-lib#9946 Do not remove numbers from the beginning of each cit… #10003
• pkp/pkp-lib#9946 submodule update ##bozana/9946## ojs#4292 (only submodule update)
• pkp/pkp-lib#9946 submodule update ##bozana/9946## omp#1578 (only submodule update)
• pkp/pkp-lib#9946 submodule update ##bozana/9946## ops#693 (only submodule update)

[bozana]

Hi @jonasraoni, could you please take a look at the PR above?

[jonasraoni]

Thanks for reminding me! I'll take a look :)