Add support for dynamic content slide property.
Add support for dynamic content slide property.

doctoryes/remark,jonathanpberger/design-testing,bkeepers/remark,jonathanpberger/mce-test,jonathanpberger/design-testing-pairing,jonathanpberger/points-estimation-velocity,tkraak/remark,tripu/remark,mariojp/remark,emi80/remark,xiaoking/remark,linkabi9/sdjs20150309directives,ghoshbinayak/nodeppt,gnab/remark,jeromecc/rmll2015madagascar,imouren/remark,jonathanpberger/design-testing-pairing,jonathanpberger/points-estimation-velocity,lucamaraschi/pressenter,smikes/remark,FabioBeneditto/remark,shigemk2/remark,jonathanpberger/dark-design,JPry/remark,saadatqadri/remark,0111001101111010/remark,kahultman/remark,jeromecc/rmll2015madagascar,bytezen/remark,saadatqadri/remark,GerHobbelt/remark,ghoshbinayak/nodeppt,gnab/remark,tilast/service-objects,noname007/remark,linkabi9/sdjs20150309directives,GerHobbelt/remark,programath/remark,tripu/remark,bkeepers/remark,JPry/remark,mariojp/remark,jonathanpberger/dark-design,lucamaraschi/pressenter,kwangkim/remark,emi80/remark,reyhansofian/remark,programath/remark,kwangkim/remark,FabioBeneditto/remark,tilast/service-objects,doctoryes/remark,shigemk2/remark,noname007/remark,xiaoking/remark,tkraak/remark,imouren/remark,smikes/remark,jonathanpberger/design-testing-aed,reyhansofian/remark,bytezen/remark,jonathanpberger/design-testing-aed,kahultman/remark