Add media image file upload to current_projects
Add choice to make used media to be link or upload
Add ability to choose video link or upload for media
Change navbar link to point to current proejcts
Require presence of media_choice radio button
Add capability to upload image for preview
Modify embed_video method to accept either links or images
Change embed_video to embed_media
  Fix improper function call arguments
make embed_video method to put into embed_media
Allow youtube or vimeo links when embedding