-reverted previous changes to matrix*vector order (sorry, didn't realize changes in rev.2180)

typo prevented returning proper content-typeé

Thanks to Philippe Van Hecke for bug finding.

1. Removed check if camera has attribute 'sensor size'. This option was needed for backwards compatibility. Not needed anymore 2. Moved adding composition's name from blender's toolbox to After Effects. User specifies name when running script in AE. 3. Added option to export selected objects' scale. 4. Rotation and scale export is now the option. User can include or exclude those properties. 5. Removed 'prefix' from AE's layers' names. This option was just creating mess. No real benefits from having this option 6. If no camera is selected - at least scene's camera will be exported (if exists)

- distributed point cache baking
- (baking fluids or anything else needs to be added but is not a hard task)
- master support getting all results as a zip (rendering, baking or otherwise), available as a link on the job's page in the web interface
- framework to support multiple result files per frame/task (needed for baking)

general code cleaning
reset multiplier after text has disappeared
support for mousewheel in icon-display
improved fading, using a timer

Added contributors and credit to Mackraken's "Tools for Curves" addon. Also tagged as pep8-80 compliant.

Added selection_utils module. It contains a modal operator which allows the order in which objects were selected to be stored for use in other operators. The list of object names is stored in selection_utils.selected

- Explicit construction of matrices is now via a list of rows not of columns
- Use Matrix.Rotation() instead of manual creation of the rotation matrix
- Use Matrix() instead of manual creation of 4x4 identity matrix

wip feature: distributed point cache baking. Distributed baking works but results are sent back to master/client yet. Feature is disabled in the UI for this reason.
new feature: job and slave tags, enables filtering slaves for specific jobs
  jobs are dispatched to a slave only it has no tags or all the job's tags
  Render jobs have the tag "render" by default while baking jobs the tag "baking"
UI: Web interface additions to reflect tags and job subtypes (render/baking)
bug fix: reseting a completed job correctly resets the status to queued

+ reversal of previous commit, which broke circle tool

- fix error when a mesh had a None material
- no need to set the object as avtive when assigning materials