Implemented "Inactivity" column on Overview page

Modified SQL to retrieve and sort by game's last activity time, added
methods to format it in a friendly way, and updated the javascript to
parse and display it.
Adjusted indentation for jenkins
Foglio, Ogres, Japanese Beetles, finished Sanctum, Samurai, Sailor Moon
Strange - this is showing as FuzzFace here but fuzzface in the folder.
Anyhow, I'm trying to fix the name problem by deleting and resubmitting
resubmitting fuzzface.png
Made the API use epoch seconds for timestamps

Modified SQL queries to use UNIX_TIMESTAMP() to return epoch seconds,
modified API specs to expect numbers for timestamp arguments, added
javascript method for rending timestamps as human-readable date time
strings, and updated dummy reponder to provide integer.
Added tests for formatTimeStamp and padLeft
fix Fightball to indicate button specials
Redirect to index page after logging out
Autofocused username textbox for login
Merge pull request #761 from ManvilleFog/756_fix_fightball

fix Fightball to indicate button specials
Japanese Beetle (unofficial)
fixed agatha and added wonderland and some unexploded cows
Added td element to contain chat textarea
Merge pull request #751 from ManvilleFog/138_button_images

Foglio, Ogres, Japanese Beetles, finished Sanctum, Samurai, Sailor Moon
Merge pull request #764 from ManvilleFog/758_JB_unofficial

Japanese Beetle (unofficial)
Merge pull request #765 from AdmiralJota/743_fix_chat_box_in_ie

Fix chat textbox in IE
Merge pull request #750 from AdmiralJota/181_game_ages_on_index_page

181 game ages on index page
Merge pull request #754 from AdmiralJota/343_make_api_use_epoch_seconds

Make api use epoch seconds
Merge pull request #759 from AdmiralJota/572_redirect_on_logout

Redirect to index page after logging out