maps

[caver456]

This topic is big enough, it should probably be its own repo to keep track of sub-tasks. For starters:

• build a library of area trail gpx files; must be easily usable in a hurried IC; consider naming convention, how to separate the files, etc
• update the PCT map
• get more map layers on to STO - Trails Illustrated for starters
• make laminated area map and coordinate cards for hasty team members, like the donner summit card