Improve admin tools

[ttoino]

Related to #58.

[pedrosilva17]

Some things I've noticed:

• I'm not sure if it's only happening with me, but after editing a user's picture, it no longer appears when I'm in the edit page for that user.
• Creating a new Company causes the following error:
  
• Updating social media currently has no effect. More on it in the comments
• isset() returns true when evaluating an array of keys with null values, which in this case means it will always return true, regardless of whether I type anything in the social media inputs or not (for example), and it will also create those types of arrays in the database. Not sure if this was intended or not, my idea was that an entry in the SocialMedia table would only be created/updated if anything was typed in the social media inputs. However, if this behavior is fixed, maybe we would need to remove that check when updating, as I might want to delete all of my social media from the website (and that will be impossible if arrays of keys with null values are properly filtered).

[ttoino]

Some things I've noticed:

• I'm not sure if it's only happening with me, but after editing a user's picture, it no longer appears when I'm in the edit page for that user.

This is caused by two things, firstly, you have to run the storage:link artisan command to create the relevant folders where pfps are stored, secondly, you need to change the APP_URL env variable to include the port (this is already done in #69).

• Creating a new Company causes the following error:
  

This works for me. You probably need to migrate the db.

• Updating social media currently has no effect. More on it in the comments
• isset() returns true when evaluating an array of keys with null values, which in this case means it will always return true, regardless of whether I type anything in the social media inputs or not (for example), and it will also create those types of arrays in the database. Not sure if this was intended or not, my idea was that an entry in the SocialMedia table would only be created/updated if anything was typed in the social media inputs. However, if this behavior is fixed, maybe we would need to remove that check when updating, as I might want to delete all of my social media from the website (and that will be impossible if arrays of keys with null values are properly filtered).

I'll look into these issues. This should now be fixed.