Update. Lasts 5 Builds & Queue Position

[PabloJHM]

Now shows extra information in the webdash:

• Replaced buildstate text for icons (Green for success, red for failure, orange for exceptions and blue for unknown).
• It shows 5 icons of the last 5 builds of the project.
• Each icon have a span which shows the build state, the date and the running time of the build.
• Clicking on an icon will send you to its build report for more details.
• Added a new column which shows the running time of the last build done.
• Added a new column which shows the priority of the project in the queue.
• Changed buttons for icons.
• Added a legend with the new icons.
• Cleaned code.
• New keys in Web.config.
• Now shows the queue position of each project.