code style: add astyle config
code style: applied Astyle to sources
code style: capitalizing constants
code style: dvector -> DVectorT
code style: template parameter 'scalar' -> 'ScalarT'
code style: template parameter 'time' -> 'timeT'
code style: class name 'polynomial' -> 'Polynomial'
code style: template parameter 'coeffT' -> 'CoeffT'
code style: template parameter 'controllerT' -> 'ControllerT'
code style: template parameter capitalization

'buildT' -> 'BuildT'
'initialT' -> 'InitialT'
code style: typdef 'auto_build_tuple' -> 'AutoBuildTupleT'
Merge pull request #15 from Parallel-in-Time/feature/code-style-showcase

coding style configuration for AStyle applied