Show HP for active pokemon on mouseover
All HP percentages round the same way now
Changes for ladder database move
Fix an issue resulting from the ladder move
Changes to alt port functionality

- don't store alt port preference in `localStorage` anymore
- don't show information about what port the client is connecting to,
  because this information isn't useful to users
Implement interstitial page for untrusted links
Fix a typo in the link whitelist