Server Feedback Updates

[BryonLewis]

resolves #43
resolves #39
resolves #37
resolves #35

• Fixes swapping between sequence and pulse and annotation editor by making so when you click on a different tab it resets the currently selected annotation to null
• Swapped the pulse/sequence order and made it default to pulse on launch
• Added a simple icon to delete owned recordings.
• Updated the upload process to kick of a celery task to generate the spectrogram. In the get /recordings it now lists if the user has a spectrogram or not. If they don't have a spectrogram a warning icon and spin bar comes up where it reloads the list every 5 seconds to see if the spectrogram is loaded. If so it stops the refreshing and allows a user to click on the field.
• Made it so the public list will filter out recordings that don't have spectrograms yet.
• Updated the login/logout text so it reflects the proper state when logged in or out

feedbackPR.mp4