restore some icon paths that went AWOL.

Update query builder error messaging

adding an `About Metabase` option to the user profile dropdown.  

Saved Questions page

mb colors in js and color harmony for higher range visualizations

few fixes and tweaks to get the new chart/dash illustration icons working and showing up properly on Recent Views box on homepage.

update setup help link to go directly to the docs for the current version, not just the latest docs in general.

Wire up download button so it can work in Mac App

updating versioning stuff so that we have individualized pieces of information which allows us to do different formatting in various places where needed.

Misc frontend fixes

allow breakouts to include PK, FK, and Entity Name type fields.