#11 directory restructured and installer modified

[Anonymous]

1. the directories has been restructured to facilitate
clean coding. all phpmylibary related files has been
transferred to polerio/PhpMyLibrary folders. These
include lang, contents, etc...

blocks
config
contents
docs
images
includes
index.html
lang
lib
maintenance
picture_dir
reports
sql
templates

2. installer has been modified to comply with this new
directory layout.