wiki: translate string; remove trigger_error when success
wiki: update translations
wiki: use CSS
add a caveat for users of this script

(I’m developing this until it DWIW on EvolvisForge; after that,
it can be adjusted along with FF trunk if desired, or be made
compatible with FF 5.3 or so depending on the needs of its users.)
fix missing variable error (global var abuse)
wiki: update search functions
import from Evolvis commit 7979d1b6db649f25583fac2f8e791ea061a4ba52

I believe we now import everything tracker-export.php generates.
Merge branch 'Branch_5_1' into Branch_5_2
Merge branch 'Branch_5_2' into Branch_5_3
Merge branch 'Branch_5_3'
import many lists and infos only if they are not empty (NULL, 0, "")

avoids noise, especially in the lost-in-importing comment
Depend on -web-apache2
wiki: modernize code
wiki: add pgsrc/DebugBackendInfo
wiki: update adodb to adodb519
wiki: remove non UTF-8 files
wiki: convert files to UTF-8
Removed unused files
Replace hardcoded paths with various calls to get the values out of the configuration system
wiki: set Phpwiki version to 1.5.0