Logistic Regression: Add tests for text column for grouping

Changes:
    - Added new test cases for grouping
    - Updated baseline for new results
    - Small improvements to R validation in linear regression
Skip tests due to change in data

Some data is improved, however this makes some tests fail
Disable test cases for multinomial logistic regression after moving to TINC
Disabled linear and logistic regressions
Change *plda* to *lda*
Fix wrong lda case names