Minor fixes and updates

[corowne]

Reviewing the code body in general, putting in some minor changes that are mostly small fixes and stylistic changes for consistency (coding/visually/English; will be...quite...pedantic). Still WIP.

• Fix SalesController index
• Indentation
• Remove consecutive <br>s in favour of margins
• A few visual changes

Todo:

• Pull large chunks of PHP code out of the views (primarily noticed in comments)
• Add a top_comment_id to all comments (and an update script to process existing comments which will hopefully not kill anyone's site) to remove recursive querying
• Pull out comment modals so that the number of modals on the page are reduced
• Reduce duplicated code (just noticed that _perma_comments.blade.php is almost identical to _comment.blade.php)
• Rename controller functions to match the getSomething/postSomething pattern?
• Script to process stacking items to compress existing inventory
• Fix the active sidebar item on the /user/{username}/favorites/own-characters route
• Log page visuals ("table" styling)

Notes on consistency:

• Variables should be camelCase unless it's a model property
• Technically there's no issue with leaving them out, but I used trailing slashes for self-closing tags in the original HTML code so adding them for consistency (<hr />, <br />, <img src="" /> rather than <hr>, <br>, <img src="">)
• Can let single <br> slide, but use margins in place of <br><br> (the Bootstrap mt-3, mb-3 classes can be used for this)
• Indentation is 4 spaces. The {!! Form::open() !!} and {!! Form::close() !!} tags should be counted as open/close tags.
• {!! Form::open() !!} and {!! Form::close() !!} preferred to <form></form> tags; the former also automatically includes the CSRF token so it's not needed.
• Avoid using the style attribute in HTML tags (this will override custom CSS), make it classes as far as possible (would say that elements that use a lot of Bootstrap classes should also be converted to CSS in lorekeeper.css, as the Bootstrap classes have !important on them and may be annoying for users to customise)
• Use full-stops for sentences.

[corowne]

I think this is good enough, the other changes would take a while longer to do and I don't want to push any more functionality changes now!