muzima-cordova: adding copyright, adding multiple plugins implementations (incomplete).
Merge pull request #7 from nribeka/mclinic-cordova#2

muzima-cordova: adding copyright, adding multiple plugins (incomplete)
muzima-cordova: cohort, patient and observation plugins implementations and the js wrapper.
Merge pull request #8 from nribeka/muzima-cordova#2

muzima-cordova: cohort, patient and observation plugins implementations ...