CRM-14751, deleted contacts visible in search

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* CRM-14751: Deleted Contacts Visible
  https://issues.civicrm.org/jira/browse/CRM-14751
CRM 15488 Include invoice description in back office Credit Card Transactions
CRM-15474 - Move js-based form alterations to php
CRM-15524 - Support addSetting in snippet mode
CRM-15427 Additional Fixes

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* CRM-15427: Profiles using Participants (Event type), Participants (Event Name) and Participants (Role) custom fields are not available for online registration
  https://issues.civicrm.org/jira/browse/CRM-15427
QA Fix
Additional QA Enhancement
CRM-15524 - Support adding scripts, styles, etc to page header/footer regions in snippet mode
CRM-15524 - Add 'ajax-snippet' region
CRM-15524 - Move static js resources to the html-header region so they don't reload with ajax page refreshes
-- CRM-15475, Retrieved value for membership status id regardless of civicrm_membership_status.is_active field

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* CRM-15475: Fatal error on membership page if membership status 'Cancelled' is disabled
  https://issues.civicrm.org/jira/browse/CRM-15475
-- CRM-15475, Used Contribution status Pseudoconstant to fetch id rather then using getfield value function

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* CRM-15475: Fatal error on membership page if membership status 'Cancelled' is disabled
  https://issues.civicrm.org/jira/browse/CRM-15475
-- CRM-15475, changed Cancelled mmebership status to reserved

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* CRM-15475: Fatal error on membership page if membership status 'Cancelled' is disabled
  https://issues.civicrm.org/jira/browse/CRM-15475
-- CRM-15475, Added upgrade code to make Cancelled status as reserved

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* CRM-15475: Fatal error on membership page if membership status 'Cancelled' is disabled
  https://issues.civicrm.org/jira/browse/CRM-15475
CRM-15556 fix - Checkbox custom field error of OnBehalf profile on online contribution's confirm page

https://issues.civicrm.org/jira/browse/CRM-15556
Merge pull request #4440 from colemanw/CRM-15524

CRM-15524 - Support adding settings, scripts, etc in snippet mode
CRM-15524 - Avoid loading profileSelector scripts in ajax mode
CRM-15346 - pass more specific context to Drupal.behaviors
Merge pull request #4500 from colemanw/CRM-15346

CRM-15346 - pass more specific context to Drupal.behaviors
CRM-15524 - Avoid loading profileSelector scripts in ajax mode

This commit tweaks the call of CRM_Core_Resources::isAjaxMode to use the simpler static method.