Enhance Error Handling

[codingfabi]

We should validate and intercept certain user inputs and also prevent crashes by throwing verbose exception. Some Ideas:

• Define invalid combinations of function parameters (e.g. transportationMode="plane" and fuelType="diesel"). We should write an evaluation util function for this that checks for certain, obvious/common combinations that do not make sense (see also: Method to get valid options for a combination of parameters #137).
• Throw UnknownEmissionFactor exception when no EmissionFactor is found.
• Throw exception on Unknown parameters (Unknown transportation mode or unknown fueling type)
• Handle common routing exceptions:
  - [ ] Invalid ORS key
  - [ ] Invalid Latitude/Longitude input
  - [ ] Adress not found

[redfrexx]

Improved error handling related to parameter combinations for emission factors in #173 . Improvement of error handling related to routing is now continued in new issue #189 .