Minor bugs around sentences.txt and vox files

No biggie, just typos in vox file names and some missing .wavs. In case there is a reference to a missing sound in a preset sentence, only a subtitle appears for it but nothing played.

sound\vox\
File			Note			What to do
------------------------------------------------------------------------
noe.wav			says "on"		DELETE
helecopter.wav		typo in file name	RENAME -> helicopter.wav 
perpulsion.wav		typo in file name	RENAME -> propulsion.wav 
sheild.wav		typo in file name	RENAME -> shield.wav 
sqaud.wav		typo in file name	RENAME -> squad.wav 
thirtteen.wav		typo in file name	RENAME -> thirteen.wav 
lab.wav			missing, but needed	CREATE
bizwarn.wav		missing, but needed	CREATE

Also, corrected closecaption lengths for HECU vox section in sentences.txt. Then no need to include <len:10> tags for these lines in closecaption_<language> files.

//===============================================================//
// 	OVERHEAD ANNOUNCEMENTS - POST HECU TAKEOVER	//
//===============================================================//

// WGH
C1A3_0 buzwarn buzwarn(e95) attention.(e75) all(e75) science(e75) personnel(e75) report(e75) topside(e65) four(e75) immediate(e75) questioning {Len 12.1 closecaption C1A3_0}
C1A3_1 buzwarn(p95) buzwarn(p95 e95) all(e85) personnel(e85) evacuate(e85) high(e75) security(e70) materials(e60) storage(e70) facility {Len 10.8 closecaption C1A3_1}
C1A3_2 buzwarn(p130) buzwarn(p130 e95) emergency(e75) uranium(e75) containment(e75) team,(e35) to(e95) sector(e70) d(e110) {Len 8.4 closecaption C1A3_2}
C1A3_3 deeoo(e80) turret(e85) maintenance(e60) team,(e85) report(e75) to(e70) central(e70) command(e70) and(e70) communications(e70) center {Len 11.7 closecaption C1A3_3}
C1A3_4 buzwarn(p98) buzwarn(p98 e95) military(e70) personnel(e85),(e75) prosecute(e75) kilo01(e85) india(e85) lima(e70) with(e75) extreme(e75) force {Len 11.6 closecaption C1A3_4}
C1A3_5 buzwarn buzwarn buzwarn(e95) attention.  this(e65) announcement(e65) system(e75) now(e75) under(e75) military(e75) command {Len 12.4 closecaption C1A3_5}
C1A3_6 buzwarn buzwarn(e95) search(e80) and(e80) destroy(e80) force(e75) bravo, reports(e70) secondary(e75) objective(e70) terminated {Len 12.0 closecaption C1A3_6}
C1A3_7 dadeda(p98 e95) bravo(e85) force(e85) reports(e85) hotel(e85) sierra(e85) mike(e85) facility(e85) is(e85) secured {Len 12.5 closecaption C1A3_7}
C1A3_8 buzwarn buzwarn(t15 e95) attention.(e75) all(e65) military(e75) personnel(e75),(e75) atomic(e75) biological(e85) chemical(e85) alert {Len 11.4 closecaption C1A3_8}
C1A3_9 buzwarn buzwarn(t15 e95) attention.(e37) all(e65) military(e75) personnel(e75),(e75) extreme(e85) atomic(e75) biological(e95) chemical(e95) alert {Len 13.2 closecaption C1A3_9}
C1A3_10 buzwarn(p95) buzwarn(p95) buzwarn(p95 e95) attention.  black(e70) mesa(e70) announcement(e70) system(e70) now(e70) under(e70) military(e70) command {Len 13.5 closecaption C1A3_10}

// ON A RAIL
C2A2B_0 buzwarn(p110 e85) buzwarn(p110 e85) attention(e65) all(e75) personnel(e75). launch(e75) control(e75) train(e75) activated(e85), clear(e75) area(e75) immediately {Len 12.6 closecaption C2A2B_0}
C2A2B_1 dadeda(e85) attention(e90), satellite(e75) rocket(e75) silo(e75) reports(e85) status(e85) green(e55) four(e90) launch {Len 11.4 closecaption C2A2B_1}
C2A2C_launch_0 buzwarn(p95) buzwarn(p95) buzwarn(p95 e95) satellite(e70) launch(e70) system(e70) activated. {Len 7.4 closecaption C2A2C_launch_0}
C2A2C_launch_1 twenty(e75) seconds(e70) remaining {Len 3.2 closecaption C2A2C_launch_1}
C2A2C_launch_2 fifteen seconds {Len 2.4 closecaption C2A2C_launch_2}
C2A2C_launch_3 ten nine eight seven six five four three two one zero launch(e65) is(e70) go {Len 14.0 closecaption C2A2C_launch_3}

// POWER UP
C1A4_1 deeoo (e95) repair crew report to(e70) track control, sector e(e100) {Len 10.4 closecaption C1A4_1}
C1A4_2 deeoo (e95) maintenance team blue(p100 t0 s0 e100), check heat exchange coolant level(e100) {Len 11.0 closecaption C1A4_2}
C1A4_3 deeoo (e95) maintenance team green, check voltage(e100) on cable seven two nine(e100) {Len 13.8 closecaption C1A4_3}
C1A4_4 (p130) buzwarn buzwarn (p98 e95) medical team to materials storage facility, team bravo reports men down {Len 15.5 closecaption C1A4_4}
C1A4_5 (p130) buzwarn buzwarn (p98 e95) alpha force move out, science personnel resistance extreme {Len 12.2 closecaption C1A4_5}
C1A4_6 (p130) buzwarn buzwarn (p98 e95) attention. all black mesa security personnel wanted four immediate questioning {Len 15.0 closecaption C1A4_6}
C1A4_7 (p130) buzwarn buzwarn (p98 e95) attention. gordon freeman report to military personnel four immediate security check {Len 15.9 closecaption C1A4_7}
C1A4_8 buzwarn buzwarn (p102) warning, hostile biological forms detected in track control area e {Len 14.8 closecaption C1A4_8}

//todo
//C1A4_ROCKET_DISABLED buzwarn buzwarn. attention, experimental rocket test fire disengaged. {Len 7.38 closecaption C1A4_ROCKET_DISABLED}
//C1A4_FUEL_POW_OFF fuel and power must be engaged to activate rocket test fire {Len 6.49 closecaption C1A4_FUEL_POW_OFF}
//C1A4_FUEL_OFF fuel must be engaged to activate rocket test fire. {Len 6.49 closecaption C1A4_FUEL_OFF}
//C1A4_POW_OFF power must be engaged to activate rocket test fire. {Len 6.49 closecaption C1A4_POW_OFF}

// BLAST PIT
//C2A1_0 buzwarn buzwarn. warning. track power failure. check lower level power plant. {Len 8.00 closecaption C2A1_0}
C2A1_1 deeoo (e95) maintenance team yellow, please(s0 e100) service relay three hundred ninety four(e100) {Len 14.5 closecaption C2A1_1}
C2A1_2 (p130) dadeda (p98 e95) attention. gordon freeman report to military personnel four immediate security check {Len 15.8 closecaption C2A1_2}
C2A1_3 (p130) buzwarn buzwarn (p98 e95) delta team reports launch control secured {Len 8.8 closecaption C2A1_3}
C2A1_4 bizwarn bizwarn bizwarn danger, turret defense systems activated, silo e {Len 12.4 closecaption C2A1_4}
C2A1_5 deeoo sector e track control please report status {Len 10.1 closecaption C2A1_5}
C2A1_6 (p130) buzwarn buzwarn (p98 e95) echo force reports perimeter breach, sector e {Len 9.8 closecaption C2A1_6}
C2A1_7 (p130) buzwarn buzwarn (p98 e95) attention, search and destroy force go to code three. eliminate all biological forms {Len 17.6 closecaption C2A1_7}
C2A1_8 bizwarn bizwarn danger, unauthorized detonation detected in experimental propulsion lab {Len 13.1 closecaption C2A1_8}

//todo
//POWER_OFF buzwarn main power is not on {Len 3.51 closecaption POWER_OFF}
//POWER_ON deeoo main power is on {Len 2.93 closecaption POWER_OFF}