First version of Planet model
Merge branch 'master' into attachments
Create TextPlanet and LinkPlanet model
Add Bootstrap; add folders for static files

Views adapted to Bootstrap:
* Create Star
* Find people
* Login
* Setup

Static files reordered
Add placeholder for message field
Float controls to the right
Multiple results in find_people; adapted to Bootstrap

* Find_people returns multiple results
* View adapted to Bootstrap
* Save draft button disabled in create star view
* Create persona view adapted to Bootstrap
Let find_people view remember form on submit
Store new personas; prettier result table

* Fixed bug where newly found Personas would not get stored
Adapt debug view to bootstrap
Splitted style files
Added attachment field to create_star view; navigation fadeout
Allow uploading attachments

* add requirement flask-uploads
* extend create_star view to allow one file upload (prototype)
* extend create_star form for file upload
* added PicturePlanet model
* add attachments folder to .gitignore
Store filename
Quick draft of attachments functionality

* create star view creates and attaches planets
* planets are shown in universe, persona, star view
* two display modes for picture planets: fill container or stretch
picture to container
Draft for link attachments

* add icon to the left of menu cards
* add link attachment field
* add planets to debug view
* add 'link' to create_star_form
Revert "Draft for link attachments"

This reverts commit ad17010ee8d54797bea0f554d0c67db462d5cd35.
Revert "Revert "Draft for link attachments""

This reverts commit 96a9a205a8b48cae4f537e9e94a5bbae94f8ca50.
Disabled link attachmend field

Current layout is not flexible enough for this
Implemented recurrent starmap sync from the operator.