AS 350 list builder

Implemented Validations

Automatically excludes experimental and unique units
Should correctly associate the general lists: IS General/IS Clan/HW Clan/Periphery units with qualifying factions.
Validates number of ART units in roster.
Validates number of JMPS units in roster.
Validates roster is within 350 PV
Validates number of ProtoMechs
Validates number of Infantry
Validates number of Conventional Vehicles
Validates total number of Mechs (BatleMechs, ProtoMechs, IndustrialMechs)

add a modal popup with planned features list.
add collection manager to allow adding a list of "chassis" that a user has in their collection
- need to figure out how to do this exactly as there isn't a specific chasis field in the data
- could also track if the model is painted
- could also support a strict mode where the exact model can be tracked instead of just the chassis
- allow filtering search results on model collection
Add list export (pdf, and json for backup/restore)
- probably need a coversheet with the roster details.
- Possibly use print style sheets that load the unit cards
add some indicator for the last time data was scraped from the MUL
need to figure out how to apply the chassis / variant validation, as those fields are not clean in the MUL data.
Add a means of building 200 point sub-lists, and adding notes about them.
- Stealing an idea from discord, also add a tool for generating combinations of ~200 points, and then allows saving if the user likes the generated option.