CRM-15522 make "Null" not evaluate as null if N is capitalized

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* CRM-15522: Last name Null disappears
  https://issues.civicrm.org/jira/browse/CRM-15522
Merge pull request #79 from agh1/null-name

CRM-15522 make "Null" not evaluate as null if N is capitalized
Looks like we have consensus that this is safe to merge.
CRM-15518 - kcfinder is GPL2 only

https://issues.civicrm.org/jira/browse/CRM-15518
Merge pull request #80 from atif-shaikh/CRM-15518

CRM-15518 - kcfinder is GPL2 only
Merge remote-tracking branch 'upstream/4.5' into 4.5-master-2014-11-04-01-45-52