pull changes from master to dev on 2014-08-06

This update brings these approved pulls to the dev branch:
* User-visible:
  * #1148, #1160: UI for "default" attack which tries to make the obvious attack based on the selected buttons
  * #1145: allow new game creation continuing previous chat after completed game
  * #1146: fixed bug affecting fire attacks in buttons with two identical fire dice
  * #1080: let players set a homepage URL in their profiles 
  * #1155: TL/not-TL selector in create_game.html should not be a multiselect
  * #1159: make button images for Hooloovoo and Linnea accessible
* Ideally not user-visible:
  * #1149: partial top-level help page, not yet linked within UI
  * #1156: fixed QUnit test erroneously failing in some timezones

Database updates:
```
00122_00683_game_creation_parameters.sql
01074_homepage.sql
```

Once this pull is merged, i will load the changes on dev.buttonweavers.com as part of #217.