OC-318: First Run of Web Based Installer Fails 

- add post update and post install hook
OC-274: Cookie HTTPOnly flag

- installer cookie
OC-291: Installer Indicated PHP 5.3 Compatibility, Projects Contains PHP 5.4 Files
Merge pull request #14 from laboro/fix/OC-274

OC-274: Cookie HTTPOnly flag
Merge pull request #15 from laboro/fix/OC-291

OC-291: Installer Indicated PHP 5.3 Compatibility, Projects Contains PHP...
Merge pull request #13 from laboro/fix/OC-318

OC-318: First Run of Web Based Installer Fails
Merge remote-tracking branch 'remotes/dev/master'