bootstrap table updates

[graceannobrien]

This PR does the following:

1. Update addErrLogDV description in parameter key (Update param key description #65)

• param-key

2. Remove unnecessary messages

• loadParamEstimates
• define_boot_table (remove show_col_types = FALSE)

3. Add .cleanup_cols argument to format functions. Check for backwards compatibility

• select_cols will still work, but we will use .cleanup_cols in examples moving forward.
• format_param_table
• format_boot_table

3. Allow user to specify bootstrap percentiles (define_boot_table column assumptions #64). Check for backwards compatibility

• getBootPercentiles: allow user to input .ci = 90, 95, "IQR" or percentiles = c(list of percentiles <1)
  - if .ci provided or number of percentiles = 3, then names = lower_perc_X, value_perc_Y, upper_perc_Z
  - if number of percentiles > 3, then names = percX, etc.
• backTrans-log and backTrans-logit: updated to work with new "perc" names
• formatValuesBoot: update to work with new "perc" names.
  - if .ci provided or number of percentiles = 3, then calculate CI (upper- lower) and name columns "boot_perc_(upper-lower)" and "boot_value_Y"
  - if number of percentiles > 3, then keep names = percX, etc.
• define_boot_table: drop 95CI-specific code, use getBootPercentiles

5. Remove nonboot_estimates argument in define_boot_table. Check for backwards compatibility

• define_boot_table: user will get warning if provide non-boot argument
• Workflow is that user will join on non-boot estimates right before make_boot_pmtable

7. Make bootstrap table function (make_pmtable bootstrap tables #54) Not finished

• make_boot_pmtable: new function to generate parameter table with non-boot estimates and bootstrap percentiles
• make_pmtable: drop description that works with format_boot_table output. It still does, but you would want to use make_boot_pmtable once it's available

Functions to QC:
Misc:

• param-key
• loadParamEstimates

Non-boot:

• format_param_table

Bootstrap-related: These all need more tests for different percentile cases

• define_boot_table
• getBootPercentiles (internal, used in define_boot_table)
• backTrans-log (internal, used in define_boot_table)
• backTrans-logit (internal, used in define_boot_table)
• format_boot_table
• formatBootValues (internal, used in format_boot_table)

Make bootstrap table: Not finished

• make_pmtable
• make_boot_pmtable