Fix for CRM-15332
Applied clean patch from bettertagoverview2
Display the 'is_selectable' checkbox as it should.
CRM-15251 - Contact details revealed when certain URLs indexed by search engines

Added No Follow and No Index to:
Petition Confirmation pages
Mailing Optouts & Unsubscribe pages
Mailing Subscription Confirmation pages
Generalise set defaults Core Recursion Form - Activity, Generalise - Set Defaults for Events, Core form generalisation of methods
fixed - Post process generates same dates for all the activities, Generalise ajax parameters for preview pop up
Towards generalising comfirm box, postprocess delete function
Towards deleting and recreating activities and resave repeat configuration
Generalise help text icons
Moved Hide summary to RecurringEntity
updation, deletion and recreation of recurring list
towards dialog and propagation dialog and code
show dialog for Recurring Entity - Centralised
postprocess maintain standards for Recursion engine
few Recurring Entity Form improvements and generate_preview ajax call needs to be genralised
change used_for column value to civicrm_type (entity-table)
detect repeat configuration changes
fixed - exclude dates set defaults not working after few changes
generalise CRM_Event_Form_ManageEvent_Repeat::updateModeRecurringEntityForEvent and renamed it to updateModeLinkedEntity
Generalised cascade changes and preview dialog code