Hide prerequisite label if there are no prerequisites associated with the walkthrough
Reorganize play dialog into two fieldsets
Fix typo
Add todos
fix/580: finishing todos left by coornail

* theming
* severity and prerequisites dispaly conditions
+ automatically select text when you click in the embed or share textareas
Merge pull request #52 from csanyiarpad/fix/clean-up-play-dialog

Fix/clean up play dialog