High input concentrations to ARCS in acidwatch crashes frontend

[fmell]

The frontend will crash if you enter high values into the ARCS model.

index-B23ZCS-Z.js:40 TypeError: Cannot convert undefined or null to object
    at Object.keys (<anonymous>)
    at Y1e (index-B23ZCS-Z.js:299:2475)
    at hN (index-B23ZCS-Z.js:38:17018)
    at Tz (index-B23ZCS-Z.js:40:44045)
    at wz (index-B23ZCS-Z.js:40:39777)
    at nJ (index-B23ZCS-Z.js:40:39705)
    at Ub (index-B23ZCS-Z.js:40:39557)
    at Bk (index-B23ZCS-Z.js:40:35921)
    at _z (index-B23ZCS-Z.js:40:34870)
    at E (index-B23ZCS-Z.js:25:1563)
kk @ index-B23ZCS-Z.js:40
n.callback @ index-B23ZCS-Z.js:40
ZD @ index-B23ZCS-Z.js:38
gL @ index-B23ZCS-Z.js:40
yz @ index-B23ZCS-Z.js:40
ZX @ index-B23ZCS-Z.js:40
iJ @ index-B23ZCS-Z.js:40
dd @ index-B23ZCS-Z.js:40
_z @ index-B23ZCS-Z.js:40
E @ index-B23ZCS-Z.js:25
B @ index-B23ZCS-Z.js:25Understand this error

Steps to reproduce:

• Open acidwatch
• Select models
• Select model arcs
• Enter 300000 PPM O2

[kvashchuka]

300.000 is way too high, but we want to accommodate up to 10.000 ppm of water

[kvashchuka]

And 1000 for all the rest