Merge remote branch 'upstream/master'
Merge remote branch 'upstream/master'
Fixed dependent-destroy for books-accessions relationship & fixed 'duration for topic' in Topic/Lesson Plan (New/Edit/Show) pages
Merge pull request #9 from Nurhashimah/master

Minor changes - Fixed dependent-destroy for books-accessions relationship & fixed 'duration for topic' in Topic/Lesson Plan (New/Edit/Show) pages