src: more translation tweaks

Suggested by: @Antonio-Prado
Suggested by: @DokuKaefer

(cherry picked from commit c0b10d06)
(cherry picked from commit 9b652216)
(cherry picked from commit a0c0a254)
(cherry picked from commit 944de05c)
(cherry picked from commit 3442cf09)

src/opnsense/mvc/app/controllers/OPNsense/Proxy/forms/main.xml

@@ -25,7 +25,7 @@
                 <id>proxy.general.logging.target</id>
                 <label>Log target</label>
                 <type>dropdown</type>
-                <help>Send log data to.</help>
+                <help>Send log data to the selected target.</help>
                 <advanced>true</advanced>
             </field>
 

src/opnsense/mvc/app/models/OPNsense/Proxy/Proxy.xml

@@ -137,13 +137,13 @@
                 <maxDownloadSize type="IntegerField">
                     <default>2048</default>
                     <MinimumValue>1</MinimumValue>
-                    <ValidationMessage>Specify the maximum download size. (number of KBs)</ValidationMessage>
+                    <ValidationMessage>Specify the maximum download size (kB).</ValidationMessage>
                     <Required>N</Required>
                 </maxDownloadSize>
                 <maxUploadSize type="IntegerField">
                     <default>1024</default>
                     <MinimumValue>1</MinimumValue>
-                    <ValidationMessage>Specify the maximum upload size. (number of KBs)</ValidationMessage>
+                    <ValidationMessage>Specify the maximum upload size (kB).</ValidationMessage>
                     <Required>N</Required>
                 </maxUploadSize>
                 <OverallBandwidthTrotteling type="IntegerField">
@@ -284,7 +284,7 @@
                             <filename type="TextField">
                                 <Required>Y</Required>
                                 <Mask>/^[a-zA-Z0-9]{1,245}\.?[a-zA-z0-9]{1,10}$/</Mask>
-                                <ValidationMessage>The filename may only contain letters,digits and one dot (not required).</ValidationMessage>
+                                <ValidationMessage>The filename may only contain letters, digits and one dot (not required).</ValidationMessage>
                             </filename>
                             <url type="UrlField">
                                 <Required>Y</Required>

src/www/system_advanced_firewall.php

@@ -272,8 +272,6 @@ include("head.inc");
                     <div class="hidden" for="help_for_natreflection">
                       <strong><?=gettext("When enabled, this automatically creates additional NAT redirect rules for access to port forwards on your external IP addresses from within your internal networks.");?></strong>
                       <br /><br />
-                      <?=gettext("The NAT + proxy mode uses a helper program to send packets to the target of the port forward. It is useful in setups where the interface and/or gateway IP used for communication with the target cannot be accurately determined at the time the rules are loaded. Reflection rules are not created for ranges larger than 500 ports and will not be used for more than 1000 ports total between all port forwards. Only TCP and UDP protocols are supported.");?>
-                      <br /><br />
                       <?=gettext("The pure NAT mode uses a set of NAT rules to direct packets to the target of the port forward. It has better scalability, but it must be possible to accurately determine the interface and gateway IP used for communication with the target at the time the rules are loaded. There are no inherent limits to the number of ports other than the limits of the protocols. All protocols available for port forwards are supported.");?>
                       <br /><br />
                       <?=gettext("Individual rules may be configured to override this system setting on a per-rule basis.");?>

src/www/system_usermanager.php

@@ -784,7 +784,7 @@ $( document ).ready(function() {
                                   <tr>
                                     <td colspan="2">
                                       <button type="button" class="btn btn-default btn-xs" id="newApiKey"
-                                          title="<?=gettext("create API key");?>" data-toggle="tooltip">
+                                          title="<?=gettext('Create API key');?>" data-toggle="tooltip">
                                         <span class="glyphicon glyphicon-plus"></span>
                                       </button>
                                     </td>
@@ -793,7 +793,7 @@ $( document ).ready(function() {
                           </table>
                           <div class="hidden" for="help_for_apikeys">
                               <hr/>
-                              <?=gettext('manage API keys here for machine to machine interaction using this users credentials');?>
+                              <?=gettext('Manage API keys here for machine to machine interaction using this user\'s credentials.');?>
                           </div>
                       </td>
                   </tr>

src/www/vpn_ipsec_phase1.php

@@ -543,7 +543,7 @@ include("head.inc");
                         <option value="start" <?=$pconfig['auto'] == "start" ?  "selected=\"selected\"" : ""; ?>><?=gettext("Start immediate");?></option>
                       </select>
                       <div class="hidden" for="help_for_auto">
-                        <?=gettext("Choose the connect behaviour here, when using CARP you might want to consider the Repond only option here (wait for the other side to connect)."); ?>.
+                        <?=gettext("Choose the connect behaviour here, when using CARP you might want to consider the 'Respond only' option here (wait for the other side to connect)."); ?>
                       </div>
                     </td>
                   </tr>