Add simple state machine upload to hexanode

[ghost]

We should add some simple default state machines that can be uploaded to devices (e.g. Plug+) from the Hexanode interface. Useful machine for the first attempt would be

• standy killer: turn off socket if measured consumption is less than $w Watt for $t time
• simple timetable based on/off switching for plugs
• master/slave for plugs?

[LongHairedHacker]

Already working in 5ec11bf, but only for the old statemachine.

Current worflow in 5ec11bf:

• User selects a statemachine template
• User adjusts the template parameters (devices involved, thresholds, timeouts ...) in a form
• A single statemachine is created from the template, compiled and uploaded to the selected devices. Statemachines previously uploaded to those devices are overwritten.

Planned Workflow for the new frontend:

• User has a list of statemachines currently running on his devices
• User can chose to add a new statemachine or edit a previously added statemachine
• User adjusts the template parameters (devices involved, thresholds, timeouts ...) in a form
• All statemachines are checked for write conflicts. User can select a resolution scheme where neccessary
• Statemachines are (re)compiled and (re)uploaded if needed

Stuff to be done for the new statemachine:

• Rewrite the statemachine builder for the new statemachine
• Add statemachine configurations to the devicetree
• Rewrite current frontend to use the new statemachinebuilder and devicetree
• Implement a detection for write conflicts
• Implement a new fronent using angular schema forms
• Display already uploaded statemachines in frontend
• Add support for devices lists
• Implement editing uploaded statemachines
• Implement deleting uploaded statemachines
• Switch backend validation of statemachine configs to tv4.js
• Find resolution schemes for write conflicts that can be applied automatically using behaviours
• Implement user interface for resolving conflicts

[LongHairedHacker]

First working version of the new backend with the old gui: 2f27a5a

[LongHairedHacker]

First version with the new angular forms based frontend and statemachine display: 9e5e233

[LongHairedHacker]

First draft for devicelist support has been added in 219f5bd

[LongHairedHacker]

Editing and deleting statemachines added in 21c456e

Resolution for write conflicts is not going to happen.
A simple scheme which prompts the user to delete one of the machines will be implemented instead.

• Implement dialog for deleting conflicting machines

[LongHairedHacker]

Dialog for deleting has been implemented in 0b8b47c.
That's it for now.