Fix image upload error with FilePicker JPEG types
add a clearContent method that will also clean up attachments
Clear content on create comment, on posting
remove some unnecessary collections
fix layout of attachment image
remove unnecessary line
do not set thumbnail because it messes with layout
Merge branch 'master' into ks_images
Merge pull request #100 from Livefyre/ks_images

Fix image upload issue with unknown media types