TMSS-190: processed review comments. Added documentation. Removed implicit parameters(=None). Factored out slabs of code into simple functions.

Resolve TMSS-435

Closes TMSS-435

See merge request !269

TMSS-190: implemented strategy pattern for computing fitness scores and picking the best scheduling unit, selecting the correct constraint evaluation methods/module based on constrains_template.

TMSS-190: implemented strategy pattern for selecting the correct constraint evaluation methods/module based on constrains_template.

TMSS-190: let stoptime be set by client(s) instead of assuming that a state update to finishing should always set the subtaks's stoptime

TMSS-435: Return json object with sunrise, sunset, day and night times at sun_rise_and_set call, handle multiple stations and timestamps provided as parameters

Resolve TMSS-421

Closes TMSS-421

See merge request !262

TMSS-322: reimplemented this feature. As stated in the ticket: such a...

Closes TMSS-322

See merge request !267

TMSS-190: and TMSS-421: merge TMSS-421 into this feature branch. Added a radbpglistener to the ratestenvironment.