Add a large number of new localized strings

[jacalata]

The majority of files changed here are

1. .properties files with new strings
2. .mo files which are the binary strings files for packaging
3. .po files which I decided we shouldn't keep in the repo because they are simply steps in the conversion from .properties to .mo
4. about a dozen src code files with changes to the string keys being used

However the interesting changes are

• prop2po.py: more robust handling for the properties->po conversion
• dodo.py: many new automation scripts for going through the entire process of properties -> po -> mo. Added a step that filters out strings that are in .properties but not used in code, which reduces the size of .mo files by 80%
• tabcmd-*.spec: change an unreliable method of collecting .mo files to manually list all of them
• localize.py: change from a 'see if this works' to 'check for existence of this folder' method to identify what kind of app is running

I've tested the windows package manually on my machine but will be using github runners to test the mac/linux packages.

[github-actions]

Coverage Report

File	Stmts	Miss	Cover	Missing
tabcmd
__main__.py	10	10	10	0%
tabcmd.py	14	14	14	0%
version.py	6	3	3	50%
tabcmd/commands
commands.py	10	10	10	0%
constants.py	77	15	15	81%
server.py	126	26	26	79%
tabcmd/commands/auth
session.py	360	42	42	88%
tabcmd/commands/datasources_and_workbooks
datasources_and_workbooks_command.py	117	13	13	89%
delete_command.py	60	16	16	73%
export_command.py	128	28	28	78%
get_url_command.py	189	61	61	68%
publish_command.py	82	24	24	71%
runschedule_command.py	21	7	7	67%
tabcmd/commands/extracts
create_extracts_command.py	42	8	8	81%
decrypt_extracts_command.py	27	2	2	93%
delete_extracts_command.py	37	6	6	84%
encrypt_extracts_command.py	27	2	2	93%
extracts.py	20	2	2	90%
reencrypt_extracts_command.py	27	2	2	93%
refresh_extracts_command.py	48	13	13	73%
tabcmd/commands/group
create_group_command.py	29	5	5	83%
delete_group_command.py	27	2	2	93%
tabcmd/commands/project
create_project_command.py	46	8	8	83%
delete_project_command.py	35	4	4	89%
publish_samples_command.py	30	4	4	87%
tabcmd/commands/site
create_site_command.py	34	5	5	85%
delete_site_command.py	28	2	2	93%
edit_site_command.py	38	2	2	95%
list_command.py	44	10	10	77%
list_sites_command.py	29	2	2	93%
tabcmd/commands/user
create_site_users.py	57	10	10	82%
create_users_command.py	60	10	10	83%
delete_site_users_command.py	43	5	5	88%
user_data.py	221	31	31	86%
tabcmd/execution
_version.py	2	2	2	0%
global_options.py	145	23	23	84%
localize.py	69	11	11	84%
logger_config.py	42	6	6	86%
tabcmd_controller.py	38	5	5	87%
TOTAL	2622	451	83%