Rename cvars

[ldesgoui]

sm_empty_active_ubercharges_when_dropped maybe
sm_fix_ghost_crossbow_bolts maybe
sm_fix_post_pause_state -> sm_restore_state_after_pause
sm_fix_slope_bug maybe, slope vs ramp difference
sm_fix_sticky_delay maybe
sm_rest_in_peace_rick_may -> sm_ghostify_soldier_statues
sm_gunboats_always_apply
sm_prevent_respawning -> sm_prevent_force_respawn

[bodolaz146]

sm_grounded_rj_resistance might be confusing as now it also gives 40% damage resistance when shooting at someone at close range. If this behavior is undesirable, then check for m_iDamagedOtherPlayers should be added.