"single page item view"----part1
Added method to showmessage or error from JS client
Added method to call cordova native function for showing message or error
Showing native alert dialog instead of html alert
Added native function for Android app to show messages or errors
Setting image data of previousAnno as tiniest gif
[Fixed] A prior screenshot is visible for an instant when an item is clicked
Merge branch 'release/1.0.49' into develop
Merge branch 'develop' of github.com:usersource/anno into feature/error-handling
Merge branch 'master' of github.com:usersource/anno into develop
Merge branch 'develop' of github.com:usersource/anno into feature/error-handling
Merge branch 'develop' of github.com:usersource/anno into feature/error-handling
Merge branch 'feature/error-handling' of github.com:usersource/anno into feature/error-handling
"single page item view"----part2

1. editting anno almost done
2. front-end part of deleting anno is done.
"single page item view"----part3
Merge pull request #119 from usersource/feature/single_page_iten_view

Feature/single page iten view
Merge pull request #120 from usersource/develop

sync with develop branch
disable checking "comment text box" visibility while text box got focused
Merge pull request #121 from usersource/feature/single_page_iten_view

Feature/single page iten view
plugin won't invoke sign-in flow