Rework the observations for the new version of DeepskyLog.

• Add observations of solar system objects, comets (Make sure that the comets with a slash in their name also can be observed (2P/Encke, ...)), ...
• Share observation using twitter / facebook / instagram
• Lenses / Filters / Eyepieces / Instruments / Locations
  • Only show delete button if there are no observations
    • Also update the tests for lens
  • Recalculate number of observations for each lens / filter / ... of the observer whenever (needed for datatables?):
    • Add observation
    • Update observation
    • Delete observation
• Show total observations, comet observations, double star observations, planet observations, moon observations, ...
• Add scale for transparancy
  • Add to openastronomylog?
• Users
  • Only show delete button if there are no observations
  • Show number of observations and lists in users/view.blade.php
  • Create the charts in users/view.blade.php, check if there is a better laravel integration with other charting libraries (in stead of HighCharts).
  • Add the deepskylog star page in users/view.blade.php
• Instruments page: instrument/show.blade.php:
  • Add first light date
  • Add the last date of the last use
  • Add the used eyepieces, filters and lenses
  • Add google maps with the locations where the telescope was used.
• Targets
  • sub/detail.blade.php: Add information if the object was already seen
  • Make the buttons work to add a new observation
• Add number of observations to the lenses and to the other instrument related things (by writing a new seeder).
• In graph of users, also show number of observations of planets, sun, moon, double stars, ...
• Likes? Comments? https://github.com/cybercog/laravel-love
• Sort on highest number of likes
• Use Laravel scout (https://github.com/laravel/scout/tree/master) to do full text searching on the observations
• Add sessions
• Make blog for every user with observations, observing lists, ... The 'sessions' can become the articles.
• Add sketch of the week to observations. During seeding of the database, fill New table. Also menu item will all sketches of the week.