Fix some typos and punctuation spacing.

lang/main.json

@@ -109,7 +109,7 @@
     },
     "notify": {
         "disconnected": "disconnected",
-        "moderator": "Moderator rights granted !",
+        "moderator": "Moderator rights granted!",
         "connected": "connected",
         "somebody": "Somebody",
         "me": "Me",
@@ -124,8 +124,8 @@
         "popupError": "Your browser is blocking popup windows from this site. Please enable popups in your browser security settings and try again.",
         "passwordError": "This conversation is currently protected by a password. Only the owner of the conference could set a password.",
         "passwordError2": "This conversation isn't currently protected by a password. Only the owner of the conference could set a password.",
-        "joinError": "Oops ! We couldn`t join the conference. There might be some problem with security configuration. Please contact service administrator.",
-        "connectError": "Oops! Something went wrong and we couldn`t connect to the conference.",
+        "joinError": "Oops! We couldn't join the conference. There might be some problem with security configuration. Please contact service administrator.",
+        "connectError": "Oops! Something went wrong and we couldn't connect to the conference.",
         "error": "Error",
         "detectext": "Error when trying to detect desktopsharing extension.",
         "failtoinstall": "Failed to install desktop sharing extension",
@@ -136,10 +136,10 @@
         "warning": "Warning",
         "passwordNotSupported": "Room passwords are currently not supported.",
         "sorry": "Sorry",
-        "internalError": "Internal application error[setRemoteDescription]",
+        "internalError": "Internal application error [setRemoteDescription]",
         "unableToSwitch": "Unable to switch video stream.",
         "SLDFailure": "Oops! Something went wrong and we failed to mute! (SLD Failure)",
-        "SRDFailure": "Oops! Something went wrong and we failed to stop video!(SRD Failure)",
+        "SRDFailure": "Oops! Something went wrong and we failed to stop video! (SRD Failure)",
         "oops": "Oops!",
         "defaultError": "There was some kind of error",
         "passwordRequired": "Password required",