Bumping development to version 1.2.1
Adding source management

Added additional option for source's participants to override quota restrictions.
Updating workbench file
Greatly improved performance of CSV report output type

- replaced internal library for generating CSV files with native code
- reports generation time no longer scales linearly with the number of rows
Merge remote branch 'origin/release' into develop
Adding self temporary_file operation
Merge remote branch 'origin/develop' into qa
Upgrading jquery, jquery-ui and jquery plugins
Removing jsTree jquery plugin

The old version of this plugin no longer supports the most recent
version of jquery, and the new one does not support the necessary
CSS and HTML customization.
jQuery >= 1.6 requires using .prop() instead of .attr()
Adding missing upgrade to source table
Making changes to split-screen (layout) parameters

The new version of this library has slightly changed how parameters work.
Corrections to old parameters make the split-screen functionality work
correctly.
Giving interviewers access to the callback calendar
Giving interviewers read-only access to site appointments
Merge remote branch 'origin/qa' into release