nroer_data_entry: PDF, Image Thumbnails creation code added
Merge branch 'mongokit' of http://github.com/gnowledge/gstudio into mongokit-explore-resources
Nroer script: try-except check added for teaches hierarchy and log_list entries converted to str
Merge branch 'mongokit' of http://github.com/gnowledge/gstudio into mongokit-explore-resources
nroer_data_entry script extra check added for teaches hierarchy
Merge pull request #716 from anujag/mongokit

Modifications for site variables
Merge pull request #717 from anujag/mongokit

spelling correction in contribute
checking for last element of teaches in template
Added modified_by and correct mime_type from file obj
Merge pull request #715 from kedar2a/mongokit-explore-resources

NROER data entry script modifications.
Reverted code to two-commits back and added if-else checks for url set-up.
In case of 'None/null' url value, if-check is put which checks if value is not null then only process documents.
Rewinding a cursor was missed, which is updated now!
django i18n/setlang view implemented
Merge branch 'search-modify' into mongokit
Misplaced html template removed.
Merge pull request #718 from AvadootNachankar/mongokit

Update on search module
Minor css changes
Code added for processing 'help_text' field of AttributeType & Appending values to list field updated.
New widget added specifically for mobile/landline/pin-code field (via use of validators field of AttributeType)