[Ohrrpgce] SVN: teeemcee/10023 Fix "549 ticks (0.3 sec)" in attack editor: rewrite seconds_estimate and

[subversion at HamsterRepublic.com]

teeemcee
2018-02-18 23:58:02 -0800 (Sun, 18 Feb 2018)
269
Fix "549 ticks (0.3 sec)" in attack editor: rewrite seconds_estimate and also speed_estimate too.

Both functions were craaaaazy, just use strprintf instead! Or FORMAT.

Reported by Foxley

Also fixed rounding error in else-chain rate and improved it with strprintf too
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U   wip/attackedit.bas
U   wip/customsubs.bi
U   wip/customsubs.rbas
U   wip/heroedit.rbas