Update Spanish translations and fix minor issues.

Issues:
	`gettext -s - "$2"` prints the -, instead of getting the desired effect
	The custom expansion  missed repeated variables in a single string
	Some string fixes

extras/po/es.po

@@ -431,7 +431,7 @@ msgid "Cannot generate encryption key."
 msgstr "No se puede generar la clave de encriptación."
 
 #: _success
-msgid "Choose the  password of your key: ::1 tomb key::"
+msgid "Choose the password of your key: ::1 tomb key::"
 msgstr "Elige una contraseña para tu clave: ::1 clave::"
 
 #: _message
@@ -606,7 +606,7 @@ msgid ""
 "key ::3 tomb key::"
 msgstr ""
 "Tu tumba está preparada en ::1 directorio::/::2 tumba:: y asegurada con la "
-"clave ::1 clave::"
+"clave ::3 clave::"
 
 #: _message
 msgid "Commanded to reset key for tomb ::1 tomb name::"
@@ -856,10 +856,6 @@ msgstr ""
 msgid "Index command needs 'mlocate' to be installed."
 msgstr ""
 
-#: _verbose
-msgid "$updatedbver"
-msgstr ""
-
 #: _failure
 msgid "There seems to be no open tomb engraved as [::1::]"
 msgstr "Parece que existe una tumba con el grabado [::1::]"

extras/po/tomb.pot

@@ -423,7 +423,7 @@ msgid "Cannot generate encryption key."
 msgstr ""
 
 #: _success
-msgid "Choose the  password of your key: ::1 tomb key::"
+msgid "Choose the password of your key: ::1 tomb key::"
 msgstr ""
 
 #: _message

tomb

@@ -491,7 +491,7 @@ option_value() {
 
 # Messaging function with pretty coloring
 function _msg() {
-    local tmp_msg="$(gettext -s - "$2")"
+    local tmp_msg="$(gettext -s "$2")"
     local msg="${(S)${(S)${(S)tmp_msg//::3*::/$5}//::2*::/$4}//::1*::/$3}"
     local command="print -P"
     local progname="$fg[magenta]${TOMBEXEC##*/}$reset_color"