Added recent items and examples to file tab

AKA backstage
Increased heading font size on windows
Merge pull request #26 from jasp-stats/pimped-file-tab

Pimped out the file tab
Updates to the Linear Regression form

Made consistent with the other forms
Adjustments to recent items list

Opening an item on the list, now moves that item to the top of the list
Simple Fix to recent items
Bump version number (0.4)
Adjustments to the intro screen
Columns now resized to fit contents after load
Created the JASP building guide
Added the JASP human guide
Overhaul of the table render

Footnote handling still needs to be done
Exponents are now aligned
Fix to when scientific notation is selected
Added 64 bit windows support
Fixes to rendering of exponentials
Fix to zeros not being rendered in tables
Tables now fold correctly

(Table folding is where multiple columns are combined into one through
interleaving)
Added rudimentary footnote support
Added R size to the Bayesian T-Tests