Various widget tweaks (only widgets, no critical stuff except minor clean-up of epicmenu.lua)

gui_epicmenu.lua: removed some duplicate code (as suggested by CarRepairer), and colouring of path label (in search mode) and make it clickable.

unit_transport_ai.lua: take account of "mass == slow" mechanic in its evaluation function.

DeluxePlayerList & CrudePlayerlist: 
attempt to avoid click stealing (which disrupt unit command): will not steal click if tooltip is disabled or SHIFT/ALT modifier key is pressed. (is not possible to not steal click and have tooltip at same time).

unit_dynamic_avoidance_ex.lua 
*scuttle will not go too close to enemy
*non-cloaky unit will not go close to enemy
*add option to disable avoidance when reload weapon

minor:
unit_jumper_jumpOverObstacle.lua: exclude sumo from auto-jumping (because it kill ally :(
cmd_area_attack_tweak.lua: allow CTRL+area_attack even if only 1 unit to attack (for consistent feeling)