Bug in initializeFromState(jFile) method of ParallelTopicModel class

[MansMeg]

There seems to be a bug in initializeFromState() method for the RTopicModel class. It seems like it does not read in the beta and alpha from the state file. This can be something that is due to an old jar in the mallet R package.

The result below is the result of the following testhat testsuite (where 0.1 is the set symmetric prior and 0.0835 is one of the learned alpha priors):
https://github.com/MansMeg/RMallet/blob/master/mallet/tests/testthat/test_mallet-io.R

* `new.doctopic.after.load.prior` not equal to `old.doctopic.prior`.
192540/192540 mismatches (average diff: 0.0303)
[1]  0.1 -  0.0835 == 0.0165
[2]  0.1 -  0.0835 == 0.0165
[3]  1.1 -  1.0835 == 0.0165
[4]  0.1 -  0.0835 == 0.0165
[5]  0.1 -  0.0835 == 0.0165
[6]  0.1 -  0.0835 == 0.0165
[7]  0.1 -  0