Some feature refinements

As more users try the feature, some bugs and updates are found and suggested. The following is the list of updates to the feature:

1. NEW: Search by rarity
2. NEW: Displaying any valor chant or skill matching the search attributes
3. Bugfix: “None” element is not included as part of “All type” resistance or magic damage. “None” element is included for non-element attack
4. Update: If the hit amount does not exist, it is set as x1
5. Bugfix: Era filter can be deselected
6. Bugfix: Reset search refreshes the page to make my life easier
7. Update: Improved form design to make it more intuitive