Update ja.lproj/Localizable.strings

I personally added:
"Complex" line 252, as in opposite of "Simple"
"Ideas generator" for the about section ^^

I would like to see this changed:
FROM
Tapping anywhere takes us to 'Edit activity'
TO
Tapping anywhere takes you to 'Edit activity'
Merge pull request #24 from mesqueeb/patch-13

Update ja.lproj/Localizable.strings