Added support for custom allocator, straight alpha, chroma-key in Frontend
UI changes.
Updated Frontend with NewTek consumer
Updated configdoc
Made changes in Frontend
Added support for restart command. Changed naming regarding NewTek iVGA.
Changed default values.
Updated frontend to only write config elements if they don't have the default value, to keep the config as clean as possible.
Updated frontend version and configdoc
Updated frontend to support screen-consumer -- borderless
Updated version
Fixed some issues.

Close #4
Close #5
Merge pull request #1 from CasparCG/master

Merge from upstream