Merge pull request #47 from ChrisBoesch/master

update
Merge pull request #326 from ruijunhuang2010/master

Merge pull request #47 from ChrisBoesch/master
able to add video on mobile device
Merge pull request #327 from ruijunhuang2010/master

able to add video on mobile device
change back the necessary code for support path edition
Merge pull request #328 from ruijunhuang2010/master

change back the necessary code for support path edition
sloved the test data issue for tags
Merge pull request #329 from LI-HE/master

sloved the test data issue for tags api call
Merge pull request #48 from ChrisBoesch/master

update
solved API fetching issue with E2E test
Merge pull request #330 from LI-HE/master

solved API fetching issue with E2E test
Merge pull request #331 from ruijunhuang2010/master

Merge pull request #48 from ChrisBoesch/master
Merge pull request #49 from ChrisBoesch/master

update
date picker #1
Merge pull request #332 from ruijunhuang2010/master

update
date picker #2
Merge pull request #333 from ruijunhuang2010/master

date picker #2
story path restriction of challenge creation/edition
Merge pull request #334 from ruijunhuang2010/master

story path restriction of challenge creation/edition
Merge pull request #9 from ChrisBoesch/master

update