-Removes option to read tabulated thermo from an external csv file (this is now
handled from within cti or xml).
-Renames `rateCoeff` keyword to the more appropriate `rate_coeff_type`, and fixing
keyword order so that this new keyword is listed last.
-Removes `else` statement from `if isinstance(self._standardState, standardState)
-Removes unused `_pure` attribute from `IdealSolidSolution` and
`BinarySolutionTabulatedThermo`
-Changes default on `tabulated_species` keyword to `None`.
-Removing superfluous `standardState:_build` from ctml_writer.py
- Removes unnecessary conc_dim() definition in `table` class.
- Removes unnecessary units defintion for mole fractions in `table` class.
- Improves grammar in error message for case when thermo table is
not provided for `tabulated_species`.
