Lots of changes

[Frooodle]

Description

• Added support for custom metadata in PDF files (Enterprise Edition feature).

• Introduced legal document support (Terms and Conditions, Privacy Policy).

• Enhanced metrics collection to include unique user counts.

• Refactored ApplicationProperties to use Lombok annotations, reducing boilerplate code.

• Corrected font name options in the add-page-numbers template.

• Improved RequestUriUtils to better handle trackable resources.

Closes #1886

Checklist

• I have read the Contribution Guidelines
• I have performed a self-review of my own code
• I have commented my code, particularly in hard-to-understand areas
• My changes generate no new warnings
• I have read the section Add New Translation Tags (for new translation tags only)

[github-actions]

🚀 Translation Verification Summary

📋 Checking with the file messages_en_GB.properties from the pr-branch - Checking the pr-branch

🗂️ Checking File: messages_ar_AR.properties...

• Test 1 Status: ✅ Passed
• Test 2 Status: ✅ Passed

---

🗂️ Checking File: messages_bg_BG.properties...

• Test 1 Status: ✅ Passed
• Test 2 Status: ✅ Passed

---

🗂️ Checking File: messages_ca_CA.properties...

• Test 1 Status: ✅ Passed
• Test 2 Status: ✅ Passed

---

🗂️ Checking File: messages_cs_CZ.properties...

• Test 1 Status: ✅ Passed
• Test 2 Status: ✅ Passed

---

🗂️ Checking File: messages_da_DK.properties...

• Test 1 Status: ✅ Passed
• Test 2 Status: ✅ Passed

---

🗂️ Checking File: messages_de_DE.properties...

• Test 1 Status: ✅ Passed
• Test 2 Status: ✅ Passed

---

🗂️ Checking File: messages_el_GR.properties...

• Test 1 Status: ✅ Passed
• Test 2 Status: ✅ Passed

---

🗂️ Checking File: messages_en_US.properties...

• Test 1 Status: ✅ Passed
• Test 2 Status: ✅ Passed

---

🗂️ Checking File: messages_es_ES.properties...

• Test 1 Status: ✅ Passed
• Test 2 Status: ✅ Passed

---

🗂️ Checking File: messages_eu_ES.properties...

• Test 1 Status: ✅ Passed
• Test 2 Status: ✅ Passed

---

🗂️ Checking File: messages_fr_FR.properties...

• Test 1 Status: ✅ Passed
• Test 2 Status: ✅ Passed

---

🗂️ Checking File: messages_ga_IE.properties...

• Test 1 Status: ✅ Passed
• Test 2 Status: ✅ Passed

---

🗂️ Checking File: messages_hi_IN.properties...

• Test 1 Status: ✅ Passed
• Test 2 Status: ✅ Passed

---

🗂️ Checking File: messages_hr_HR.properties...

• Test 1 Status: ✅ Passed
• Test 2 Status: ✅ Passed

---

🗂️ Checking File: messages_hu_HU.properties...

• Test 1 Status: ✅ Passed
• Test 2 Status: ✅ Passed

---

🗂️ Checking File: messages_id_ID.properties...

• Test 1 Status: ✅ Passed
• Test 2 Status: ✅ Passed

---

🗂️ Checking File: messages_it_IT.properties...

• Test 1 Status: ✅ Passed
• Test 2 Status: ✅ Passed

---

🗂️ Checking File: messages_ja_JP.properties...

• Test 1 Status: ✅ Passed
• Test 2 Status: ✅ Passed

---

🗂️ Checking File: messages_ko_KR.properties...

• Test 1 Status: ✅ Passed
• Test 2 Status: ✅ Passed

---

🗂️ Checking File: messages_nl_NL.properties...

• Test 1 Status: ✅ Passed
• Test 2 Status: ✅ Passed

---

🗂️ Checking File: messages_no_NB.properties...

• Test 1 Status: ✅ Passed
• Test 2 Status: ✅ Passed

---

🗂️ Checking File: messages_pl_PL.properties...

• Test 1 Status: ✅ Passed
• Test 2 Status: ✅ Passed

---

🗂️ Checking File: messages_pt_BR.properties...

• Test 1 Status: ✅ Passed
• Test 2 Status: ✅ Passed

---

🗂️ Checking File: messages_pt_PT.properties...

• Test 1 Status: ✅ Passed
• Test 2 Status: ✅ Passed

---

🗂️ Checking File: messages_ro_RO.properties...

• Test 1 Status: ✅ Passed
• Test 2 Status: ✅ Passed

---

🗂️ Checking File: messages_ru_RU.properties...

• Test 1 Status: ✅ Passed
• Test 2 Status: ✅ Passed

---

🗂️ Checking File: messages_sk_SK.properties...

• Test 1 Status: ✅ Passed
• Test 2 Status: ✅ Passed

---

🗂️ Checking File: messages_sr_LATN_RS.properties...

• Test 1 Status: ✅ Passed
• Test 2 Status: ✅ Passed

---

🗂️ Checking File: messages_sv_SE.properties...

• Test 1 Status: ✅ Passed
• Test 2 Status: ✅ Passed

---

🗂️ Checking File: messages_th_TH.properties...

• Test 1 Status: ✅ Passed
• Test 2 Status: ✅ Passed

---

🗂️ Checking File: messages_tr_TR.properties...

• Test 1 Status: ✅ Passed
• Test 2 Status: ✅ Passed

---

🗂️ Checking File: messages_uk_UA.properties...

• Test 1 Status: ✅ Passed
• Test 2 Status: ✅ Passed

---

🗂️ Checking File: messages_vi_VN.properties...

• Test 1 Status: ✅ Passed
• Test 2 Status: ✅ Passed

---

🗂️ Checking File: messages_zh_CN.properties...

• Test 1 Status: ✅ Passed
• Test 2 Status: ✅ Passed

---

🗂️ Checking File: messages_zh_TW.properties...

• Test 1 Status: ✅ Passed
• Test 2 Status: ✅ Passed

---

✅ Overall Check Status: Success