Update sv.json

Gratis -> Fritt, fri, fria

A few additional translations.
Merge pull request #664 from Phredreeke/patch-1

Update sv.json
Correct Apple iMessage name

iMessage is a system that extends beyond OSX alone. The given alternatives are capable of replacing the iOS version of Apple's messaging application as well as OSX's, so it's better not to single OSX out.
remove json triple spacing in de.json
Merge branch 'master' of github.com:nylira/prism-break
Merge pull request #668 from h31ix/patch-1

Correct Apple iMessage name
Update index.html with better encryption transparency explanation
Update en.json with better encryption transparency explanation
Update de.json with better encryption transparency explanation
Merge pull request #670 from Cathryne/master

Update index.html with better encryption transparency explanation
Merge pull request #673 from Cathryne/translation-131007a

Update en.json with better encryption transparency explanation
Merge pull request #674 from Cathryne/translation-131007b

Update de.json with better encryption transparency explanation
Update de.sjon with typo- and wording-fixes in "i18n-donate-content"-section
Merge pull request #675 from Cathryne/translation-131008a

Update de.sjon with typo- and wording-fixes in "i18n-donate-content"-sec...
add closed-source note to android section (+i18n)
Merge pull request #676 from bthomson/master

Add closed-source note to android section
add section for scheduling services

with two examples:
Doodle (proprietary) and Dudle (free)
resize doodle and dudle images
fix i18n class for Scheduling header
add translation stubs for i18n-scheduling and i18n-dudle-desc