update db for multi site support in future.
ci2.1.3 and agni multi site

update to Codeigniter 2.1.3
update Agni CMS multi site step 1 (not finish yet).
Merge pull request #16 from vee-bizidea/master

multi site working step1
continue working on multi site

continue working on multi site step 1.5
remove old code
continue working on multisite
working on multisite

multisite 60% complete.
Merge pull request #17 from vee-bizidea/master

multisite 60%
list sites in admin menu
multisite 70%
Merge pull request #18 from vee-bizidea/master

pull request
add site when install agni cms
update or insert condition when install agni
add wildcard support.

add * wildcard support for exception or only uri
book/* including book/magazine, book/comic/action
add single login support for multisite (db)
add single login suppor for multisite
remove debug message
multisite module management

add module management for multisite support (99%)
overall multisite process is 80%
multisite module management

correction module load on sites in each files.
working on theme multisite