lastchanges angepasst
fixed #195
fixed #198
sql->escape statt mysql_real_escape
gewidmet: Markus Staab :)
fixed #189
fixed #178
rex_var::toArray(): use ENT_QUOTES, #208
rex_replace_dynamic_contents: fixed return value, closes #185
fixed #201
lastchanges vergessen - prefix bei REX_ARTICLE Bug
fixed #181
fixed rex_var::toArray(), closes #208
prevent notice on session_start(). refs #210.

some addons/external classes use nevertheless session_start() therefore
the error might not be fixed in all situations.
fixed rex_login::startSession

	redaxo/include/addons/image_manager
	redaxo/include/addons/textile