We do not extends AJXP_Plugin, don't use $this->log*

Signed-off-by: Etienne CHAMPETIER <etienne.champetier@fiducial.net>
We do not extends AJXP_Plugin (we implements AjxpWrapper), don't use $this->log*

Signed-off-by: Etienne CHAMPETIER <etienne.champetier@fiducial.net>
Merge pull request #292 from echampet/log2

Correct log refactoring