Update pan-gene sets

[sammyjava]

Just a task list for me to keep track of updating the pan-gene sets in the current 5.1.0.3 mines.

• [x] arachismine - Arachis.pan2.5P1K
• [x] cicermine - Cicer.pan2.CMWZ
• [x] glycinemine - Glycine.pan4.RK4P
• [x] medicagomine - Medicago.pan2.451K
• [x] phaseolusmine - Phaseolus.pan2.G5HV
• [x] vignamine - Vigna.pan2.MQQM
• [x] legumemine - all six

[sammyjava]

Pan-gene sets are all updated on the production mines. (LegumeMine took about a week to load them.)