Merge pull request #1 from matti-kariluoma/webplugin

Change stevedore requirement to require versions older than 0.14
Rewrite tests for spreads.cli
Fix SpreadsNamedExtensionManager to work with newer stevedore versions
Rewrite spreads.plugin tests
Fix wrong page count in workflow when triggering a recapture
Rewrite spreads.workflow tests
Do not auto-import device drivers in spreadsplug.__init__
autorotate: Ignore non-JPEG files
Rewrite spreadsplug.autorotate tests
chdkcamera: Clean up temporary files from orientation getting/setting
chdkcamera: Remove two_device_mode from capture method signature
chdkcamera: Fix bug in Lua table parsing
chdkcamera: Inmprove exception semantics
chdkcamera: Implement yield_devices for A2200CameraDevice
Rewrite spreadsplug.chdkcamera tests
Rewrite spreadsplug.gui tests
scantailor: Detect enhanced mode on initialization, not on import
Rewrite spreadsplug.scantailor tests
spreadsplug.tesseract: Refactoring
Add tests for spreadsplug.tesseract