CRM-15023 - Fatal errors thrown on Event Info, registration, Contribution Pages

Simple workaround to ensure that pluggable.php is loaded before we check
capabilities in WordPress
Merge pull request #3712 from tadpolecc/tadpolecc

Tested working fine
CRM-15001 - clarify field label, terminology and help text.

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* CRM-15001:
  https://issues.civicrm.org/jira/browse/CRM-15001
Merge pull request #3715 from davecivicrm/CRM-15001

CRM-15001 - clarify field label, terminology and help text.
CRM-15021 fix - Reenabling 'Allow other amounts' on contribution page leaves field inactive

https://issues.civicrm.org/jira/browse/CRM-15021
Merge pull request #3716 from monishdeb/CRM-15021

CRM-15021 fix - Reenabling 'Allow other amounts' on contribution page le...
Merge pull request #3713 from yashodha/CRM-15002

CRM-15002: fix broken Link Case functionality
CRM-15002: fix case id in subject