fix bug #1809 should not be able to delete photo of child registered with only the photo by  Li Ke
modified scenario:Uploading multiple images along with audio file
update delete photos  method and test.
merged feature file related to user
Jaya: Removed 2 repetative steps in web_steps.rb
[#1821] Akash/Faris : moved current_formatted_time from child to RapidFTR::CLock
1606 | Subhas | Fix order of resetting database during windows installer
S#1676|Garima/Mark|Divided permission for child export in abilities

This commit contains:-
* Changing of permission All Children page
* Changing of permission on Single Child page
* A database migration to migrate existing data to new permissions
Added some more test scenarios
Renaming spec/views/child to spec/views/children
Renaming spec/views/formsections to spec/views/form_sections
test modification
Jaya: Fixed a web step in add_custom_field_to_form_section.feature
Faris/Akash - #1821 - added controller for viewing log entries
Merge branch 'master' of git://github.com/rdsubhas/RapidFTR into pull-req-508
Merge branch 'pull-req-508'
Merge branch 'master' of git://github.com/rapidftr/RapidFTR
Faris/Akash - create log entries on export and display them
[#1821] Akash/Faris : Created log entry for a single export.
Merge branch 'master' of git://github.com/rapidftr/RapidFTR