Websites addition : manganelo and mangamoins

[CAprogs]

Added 2 news websites : manganelo and mangamoins

• Now websites have distinct colors in the settings window
• Now tracking the average update time in config.json : in seconds
• Added a resume of updates : how many updates succeeded, failed and how many were skipped
• Added infos about the average duration of an update in confirmation window
• reduced the number of websites available for Pandascan Lite : scantrad, lelscans , manganelo and tcbscans are the left ones
• Added a delay on scantrad's update to avoid skipped mangas : scantrad's server is slow
• Updated README's and Settings window
• Updated Database
• Bug fixes ( in changelog module )