www/codeigniter: update 2.2.5 -> 2.2.6

• Update PORTVERSION and distinfo for security release (2.2.6)
• Take MAINTAINER [1]
• Register CONFLICTS for upcoming 3.x release
• Add additional line breaks into file list
• Convert to options helpers and reorder variables
• Unmute do-install commands
• Fix WWW:
• Fix NOAPACHE variable in pkg-plist to match option (APACHE)

PR: 203403
Approved by: maintainer timeout (16 months since last submission) [1]
Security: https://vuxml.FreeBSD.org/freebsd/bdd57272-803c-11e5-ab94-002590263bf5.html
MFH: 2015Q4