Add Traditional Chinese in Taiwan translations of Activity Page

Supplement zh_TW translation of Activity Page

/cc @godfat @hazelyang @jodeci @chikei @29988122

Progression

• Template (.pot file)
• Translation (.po file)
• Packaging (app.js file)

Links / references

• #32951 (closed) : Community translations (Meta)
• v9.4-ActivityPage is Translation branch on the Zanata project