add option to view all item affixes sans dropdown

[JustinStitt]

Description of the problem being solved:

When altering item stats it can be quite cumbersome to change each affix one at a time while jumping between options in a dropdown. For example, Timeclasp has 6 affixes with ranges and to modify this one to your liking would require many many clicks.

My PR adds an option that auto-expands this affix dropdown into a stacked list of affix+slider pairs.

Steps taken to verify a working solution:

• Go to Options and enable Show all item affixes sans dropdown
• (I chose that weird verbiage because saying Show all items affixes without dropdown overflowed the options pane)
• Open up an item for modification on the right-side pane
• See affixes listed in a stacked list instead of a dropdown.

Link to a build that showcases this PR:

Empty build

Before screenshot:

After screenshot:

The option is off by default. I think most people will want it on, though. Should we turn it on by default?

[JustinStitt]

uhhhh i broke rare items... 9b1adf5 fixes it though :)