Minor punctuation tweaks for English language

Fixing up a couple of grammatical quirks.

application/language/english/general_words_lang.php

@@ -2,9 +2,9 @@
 
 defined('BASEPATH') OR exit('No direct script access allowed');
 
-$lang['error_no_active_station_profile'] = 'Attention you need to set an active station profile.';
+$lang['error_no_active_station_profile'] = 'Attention: you need to set an active station profile.';
 
-$lang['notice_turn_the_radio_on'] = 'You have made no QSOs today, time to turn on the radio!';
+$lang['notice_turn_the_radio_on'] = 'You have made no QSOs today; time to turn on the radio!';
 
 $lang['general_word_important'] = 'Important';
 
@@ -36,4 +36,4 @@ $lang['gen_hamradio_band'] = 'Band';
 $lang['dashboard_you_have_had'] = 'You have had';
 $lang['dashboard_qsos_today'] = 'QSOs Today!';
 $lang['dashboard_qso_breakdown'] = 'QSOs Breakdown';
-$lang['dashboard_countries_breakdown'] = 'Countries Breakdown';
+$lang['dashboard_countries_breakdown'] = 'Countries Breakdown';