CRM-14487 - Fixed PHP notices.

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* CRM-14487:
  https://issues.civicrm.org/jira/browse/CRM-14487
fixed indentation and added comments, CRM-14503

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* CRM-14503: Incorrect global groups listing
  https://issues.civicrm.org/jira/browse/CRM-14503
Merge pull request #3036 from kurund/CRM-14503

fixed indentation and added comments, CRM-14503
Merge pull request #3026 from GinkgoFJG/CRM-14487

CRM-14487 - Fixed PHP notices.
Clarify contribution form amount field help given the possibility of partial payments.
Merge pull request #3038 from davecivicrm/fixContribHelp

Clarify contribution form amount field help given the possibility of par...