Improve Visitor Log UI, display Page Titles, Goals conversions #2281

Some work was done In [4314])

What is left:

• Display Outlinks in action column
• Display Downloads in action column
• Display manual goal conversions in action column. Currently, only URLs matched Goals are displayed in the Visitor log.
• Could we display the result number from the google search, when this is available in the parameter in referer? while we don't report on it, it could be a first step to show it in Visitor Log

(In [4394]) Fixes #2281

• Now display Clicks, Downloads and Multiple Goal conversions in both Visitor Log and Live! widget
• Added goals/all actions in Live! API output, simplifying output. Hopefully now output is final for Piwik Mobile & other apps to re-use (any feedback on this?)
• cleaning up colored logos ensuring background is pure white rather than slightly colored