job and frame status cleanup (move to the model module)
record transitions between states in job to be able to get (among others) the started and finished time.

Reported by Ron Proctor

netrender didn't recursively create missing directory for user specified temporary paths.

Also added environment variables and user expansion to properly support env vars and user (~ and ~user) in paths.

change to the repatching and local naming algorithms to better support different files with same name and dependency folder hierarchies.

Support for secure connections between Master/client/slave using SSL/HTTPS

Fixed a bug with total job time on web interface (wrong value)

typo prevented returning proper content-typeé

Thanks to Philippe Van Hecke for bug finding.

- 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)

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

- Support for dynamic painting point cache (patch by Philippe Van Hecke)
- Fix job log name generation to not exceed filename limits when using large chunks
- Cleaning up duplicated code for point caches, fluid and multires between client and repath module

- fix handling of pointcache dependencies on slave (correct repathing) and on client (bad frame dependency range)
- add Force Upload option on master to force dependencies upload and download (don't reuse local copies outside of slave cache)
- add links back to main page on job web page
- client limit dependencies to rendered frame range (it used to add all point cache frames)

Thanks to Philippe Van Hecke for raising the issue by email.

[#29648] patch for netrender: correctly send smoke cache domain

Both by Philippe Van Hecke

Render engine support was expended to be able to specify non-builtin engines.

indentation edits and copy pyrimid from contrib (where I had made some edits), removed so this wont happen again.

fix error when sending thumbnail to master

Based on patch [#28108] by Wintch Analyzer

by Wintch Analyzer 

moving master working path initialization before connection creation

also added error checks and prints to debug an invalid internal state (related to another tracker entry)

- remove/comment unused variables
- remove unused imports
- fixed some bugs using incorrect variables

better stream handling when uploading files
Might solve the problem with OS X masters