[WIP] generates inputs for sql containing certain patterns
[WIP] dynamic sql handler using merged observable
* upstep rx
* Sql class to wrap the sql to be executed
* still have to defined sql injectsion and other widgets for the other types
Sql is auto updated from boxes, but within a Observable → need a way to regsiter a function on it...
fix usage of ko in SparkInfo for single value binding
define other input widgets, enhanced SQL but not there yet →  Spark tasks are stucked
Provided Spark and assembly

Spark is now a provided deps, which allows easiest integration with other spark flavors if needed (→  wrapping project)

Assembly is configured but behaves weirdly → some resources cannot be loaded from jars, hours of explorations are suspecting
that folder in jar containing lots of entries exploses the netty resource loader...
Merge pull request #8 from andypetrella/spark-less-build

Provided Spark and assembly
SQL is reactive \o/
rm uneeded file
Merge pull request #9 from andypetrella/spark-sql-inputs

Spark sql inputs