survey_list accept new entries from prev years

[IJBG]

• [x] Find source of survey_list vs latest_surveys (without filtering to just the latest year) discrepancy.
• [x] Likely, the fix will be adding a function to accept new entries to survey_list when they're not already present, regardless of year. This could perhaps be achieved through modification of the existing function without requiring a new one.
• [x] Add date (month and day column) and time to mbbs_survey_events
• [x] Add date and time columns to the 'select' in hist_xls_match_mbbs_format
• [x] Add automated testing to see if things are/are not on survey list
• [x] To the point above, add auto-testing to make sure there's no year where there's more than 1 entry on survey list or in survey_events.rda
• [x] survey_list should check if each route/year/mbbs_county combo is present and add new entries if they're not there
• [x] create a function like 'update_specified_survey_list_entry(mbbs_county, route, year)' that takes that information and updates that specific entry in case there's new information (eg there was a missing survey) for it.
• [x] Maybe.......this function just needs to check for the if the S/N matches the expected for EVERY survey combo and flag if there's something unexpected, or an empty observer column
• [x] Add in the input/output part of the mini obs conversion table something that prints out all names that match the first letter. eg, we're adding 'Ivara G' and it would print out that the current standard names starting with 'I' are 'Ivara Goulden' and 'Ivy LastName'

[IJBG]

Date and time do not actually need to be added to mbbs_survey_events because that's information that's in the dataset already itself. The goal of survey_list is to have a stable list of all the surveys, where further information is then added (ie: all the observers processing) in survey_events, and then survey_events gets merged back over date and time are duplicate columns. What's really required here is date and time being added to the hist_xls function, and also getting date and time from the transcribed files.

[IJBG]

But, argument FOR date and time being part of survey_events: it's important information and it's nice to see it in a snapshot where we have all this other information about the surveys. Probably time can be skipped (it's like always 5:30, part of the data collection is that set time). But date is valuable to see alongside the number of species (S) and the number of individual birds (N)

Additionally, for data that is NOT being imported from ebird or the old website, the only record for date may be in survey-list.

[IJBG]

Not sure where this discrepancy is coming from yet (it COULD be pre-dawn owling surveys, it could be times when routes were split and done on different days eg. bc of roadwork or temporary closures) but it's probably that people have uploaded ebird entries that were missing? Requires investigation and update of survey_list. Adding new task above

[IJBG]

Accidentally linked with #69 pull request by referencing it, this issue has not been fixed

[IJBG]

Opening new branch to fix final issue: To the point above, add auto-testing to make sure there's no year where there's more than 1 entry on survey list or in survey_events.rda