Allow users to hide board announcement
Add hide var to test
Fix test
Use dismiss instead of hide
Use dismiss and default value in test
Add default value for dismiss for test
Change order and do not use plurar form
Add protection for CSRF attacks
Correct language
Add config object
Move dismiss after guest config
Delete parenthesis
Trailing whitespace at end of line
Merge pull request #53 from Pico/issue52

Allow users to hide board announcement
Closes #52