..F....... [ZBX-7896] fixed translated error messages not being rendered correctly in images

Before the fix:
- When displaying an error in an image the standard imagestring() function was used, which does not support true type fonts and cannot render Unicode symbols. Because of that translated error messages were rendered incorrectly.
 
 After the fix:
 - The imagestring() function has been replaced with imageText(), which can render Unicode symbols correctly. 
 
 Additionally, the  imageText() and imageTextSize() functions will now no longer check for FreeType support since it is required by the frontend.
.......... [ZBXNEXT-826] updated release date
.......... [ZBXNEXT-826] Windows precompiled agents
A.F....... [ZBX-1357] regenerate po files
A.F....... [ZBX-1357] updated Brazilian Portuguese, Japanese, Slovak and Turkish translations; thanks to Zabbix translators
.......... [ZBXNEXT-826] updated release date and version [2.2.3]
.......... [ZBXNEXT-826] Windows precompiled agents
.......... [ZBXNEXT-826] updated release version [2.2.4rc1]; updated API version [2.2.4]
.......... [ZBXNEXT-826] undoing changes in r43984
.......... [ZBXNEXT-826] undoing changes in r43978
.......... [ZBXNEXT-826] undoing changes in r43977
.......... [ZBXNEXT-826] updated release version [2.2.3rc2]
.......P.. [ZBXNEXT-166] fixed bug where proxy would not store items with text value type
....I..... [ZBXNEXT-166] updated changelog
.......P.. [ZBX-8006] fixed memory leak in proxy when handling ssh, telnet and database monitor items
.......... [ZBX-8006] fixed ChengeLog entry position
.......... [ZBXNEXT-826] updated release date
.......... [ZBXNEXT-826] Windows precompiled agents
.......... [ZBXNEXT-826] updated release date and version [2.2.3]
.......... [ZBXNEXT-826] Windows precompiled agents