Add JsonFormat to handle json logs without regex parsing.
Used to live import nginx logs to piwik.
[Fix] parent initialization
added first version of new translation tool containing
- method to fetch new translation files from oTrance
- method to fetch files and create a pull request
- helper methods to show available language names/codes
- method to show all translation keys that are used anywhere within the code
- method to list all plugins that contain their own language files
uppdated new language tool to support update for plugin translations file
small fixes
vim config for tabs with 4 spaces
language update  refs #3430
language update DBStats refs #3430
language update ExamplePlugin refs #3430
Refs #4208 refactor all singletons except the hard ones (with custom getInstance()
(some tests failing)
Converged submodules
Refs #4208 refactor some singletons
Updating tests README.md to reflect new Screenshot testing mechanism.
Tweaking tests README.md.
Tweaking tests/README.md again.
Merge pull request #122 from piwik/translationupdates

automatic translation update
submodule update
removed old language update script
Update comment
refactor segment for reusing archives