Memory savings

[scottyob]

NOTE: Depends on PR #85 for memory profiling debugging

Reduces the max waypoint and moves the Fanet graphics into Flash and out of memory. Savings is about 55 KB of heap memory savings. Almost enough to store an entire BLE stack into!

Before:

=== Memory Stats ===
Total Heap: 241 KB
Free Heap: 103 KB
Used Heap: 138 KB
Largest Free Block: 41 KB
Minimum Free Heap Ever: 100 KB
Main Task Stack High Water Mark: 12 KB
Free PSRAM: 0 bytes
Largest Free PSRAM Block: 0 bytes
====================

After:

=== Memory Stats ===
Total Heap: 296 KB
Free Heap: 158 KB
Used Heap: 138 KB
Largest Free Block: 95 KB
Minimum Free Heap Ever: 155 KB
Main Task Stack High Water Mark: 12 KB
Free PSRAM: 0 bytes
Largest Free PSRAM Block: 0 bytes
====================