Qt metrics v1.1: Added database status box

Added new Ajax box for database status showing session start time
and database update time. If update in progress, show the update
start time and and step progress. If database updated after session
start time, show that new data is available.

Time is in GMT in database but shown as local time (with time
difference to GMT) in the status box. Project dashboard shows the
build time in GMT only.

Changes verified in Windows browsers: Firefox, Chrome, Opera, IE8
(by modifying PC timezone setting) and in Mac browsers: Safari,
Chrome, Firefox, Iron.
Changes validated with W3C HTML5 and CSS3 validators.

Change-Id: Ibcbaa265aef92772ca60db14a86a0708615c4bd1
Reviewed-by: Tony Sarajärvi <tony.sarajarvi@digia.com>