Makes phpPgAdmin core full UTF-8 only.

Makes phpPgAdmin core full UTF-8 only.

Translations, db connexions and html pages are now all in UTF-8. In
consequence:
  * we remove everything about recode stuffs
  * recode all lang/ translation files to UTF-8
  * force UTF-8 in htmlentities

Conflicts:

	classes/Misc.php
	lang/chinese-utf8-zh_CN.php
	lang/french.php
	lang/greek.php
	lang/japanese.php
	lang/lang2xml
	lang/portuguese-br.php
	lang/recoded/catalan.php
	lang/recoded/chinese-utf8-zh_CN.php
	lang/recoded/chinese-utf8-zh_TW.php
	lang/recoded/czech.php
	lang/recoded/english.php
	lang/recoded/french.php
	lang/recoded/galician.php
	lang/recoded/german.php
	lang/recoded/greek.php
	lang/recoded/hungarian.php
	lang/recoded/italian.php
	lang/recoded/japanese.php
	lang/recoded/lithuanian.php
	lang/recoded/polish.php
	lang/recoded/portuguese-br.php
	lang/recoded/romanian.php
	lang/recoded/russian-utf8.php
	lang/recoded/slovak.php
	lang/recoded/spanish.php
	lang/recoded/turkish.php
	lang/spanish.php
	lang/turkish.php
	libraries/lib.inc.php