Merge pull request #20 from alexwlchan/master

Minor changes, and the first of the new functions
Merge pull request #21 from alexwlchan/master

Two new mathmo questions, and other minor tweaks
Merge pull request #22 from alexwlchan/master

hotfix for 'grunt unmask'
Merge pull request #23 from alexwlchan/master

second go at fixing 'grunt unmask'
Merge pull request #24 from alexwlchan/master

mathmo questions on circle/line intersections
Merge pull request #29 from alexwlchan/master

minor typo tweaks from the laundry list
merged with Alex's latest. Revised credits.
Merge branch 'master' of github.com:gmp26/Apps1
bumped version number to 0.9.5
updated angular, angular-ui, and fixed mathmo plot no-show in unmasked mode
added exception handling if localStorage unavailable or full
fixed dialog for iPad - close in header means content may be scrolled.
Merge pull request #1 from gmp26/master

merged with Mike’s latest