OO-1658: updated context help in course statistics

src/main/java/org/olat/course/statistic/_chelp/statistic_intro.html

-<br/>$r.translate("chelp.statistic.intro") <br/> <br/>
-$r.translateWithPackage("org.olat.course.statistic", "chelp.statistic.grafics") <br/> <br/>
-$r.translateWithPackage("org.olat.course.statistic", "chelp.statistic.notice") <br/> <br/>
-$r.translateWithPackage("org.olat.course.statistic", "chelp.statistic.details") <br/> <br/>
-
-

src/main/java/org/olat/course/statistic/_content/statistic_index.html

 <div class="o_course_stats">
 <fieldset class="o_form form-horizontal">
 	<legend>
-		$r.contextHelpWithWrapper("org.olat.course.statistic","statistic_intro.html","help.hover.statistic")
+		$r.contextHelpWithWrapper("Using Course Tools#_statistiken")
 		$r.translate("index.title")</legend>
 	<div class="o_desc">$r.translate("index.intro")</div>
 </fieldset>

src/main/java/org/olat/course/statistic/daily/_chelp/statistic_daily.html

-<br/>$r.translate("chelp.statistic_daily.text")

src/main/java/org/olat/course/statistic/daily/_content/dailystatisticform.html

 <fieldset class="o_form form-horizontal">
 	<legend>
-		$r.contextHelpWithWrapper("org.olat.course.statistic.daily","statistic_daily.html","help.hover.statistic")
 		$r.translate("statistic.title")</legend>
 	<div class="o_desc">$r.translate("statistic.intro", $statsSince)</div>
 	$r.render("statisticForm")

src/main/java/org/olat/course/statistic/weekly/_chelp/statistic_weekly.html

-<br/>$r.translate("chelp.statistic_weekly.text")<br/> <br/>
-$r.translate("chelp.statistic_weekly.column")<br/> <br/>
\ No newline at end of file

src/main/java/org/olat/course/statistic/weekly/_content/weeklystatisticform.html

 <fieldset class="o_form form-horizontal">
 	<legend>
-		$r.contextHelpWithWrapper("org.olat.course.statistic.weekly","statistic_weekly.html","help.hover.statistic")
 		$r.translate("statistic.title")</legend>
 	<div class="o_desc">$r.translate("statistic.intro", $statsSince)</div>
 	$r.render("statisticForm")

src/main/java/org/olat/course/statistic/weekly/_i18n/LocalStrings_de.properties

@@ -2,7 +2,7 @@ menu.createstatfile=W\u00F6chentlich
 menu.createstatfile.alt=W\u00F6chentliche Statistik anzeigen
 
 statistic.title=W\u00F6chentliche Statistik
-statistic.intro=Diese Statistik zeigt alle Zugriffe auf die Kursbausteine basierend auf allen verf\u00FCgbaren Kursdaten (seit {0}) pro Woche.
+statistic.intro=Diese Statistik zeigt alle Zugriffe auf die Kursbausteine basierend auf allen verf\u00FCgbaren Kursdaten (seit {0}) pro Woche. <br/>Der Spaltentitel setzt sich jeweils aus der Jahreszahl und der Kalenderwoche zusammen. Der Eintrag "2011-7" steht z.B. für die siebte Kalenderwoche des Jahres 2011.
 statistic.chart.intro=Diese Grafik zeigt alle Zugriffe {0} basierend auf allen verf\u00FCgbaren Kursdaten (seit {1}) gruppiert nach Woche.
 statistic.chart.pernode.intro=Diese Grafik zeigt alle Zugriffe auf die Kursbausteine in der Woche {0}.
 statistic.chart.pernode.total.intro=Diese Grafik zeigt alle Zugriffe auf die Kursbausteine während der gewählten Zeitspanne.

src/main/java/org/olat/course/statistic/weekly/_i18n/LocalStrings_en.properties

@@ -11,5 +11,5 @@ stat.table.header.total=Total
 statistic.chart.intro=This chart shows all accesses {0} based on the entire course data available (since {1}) sorted by week.
 statistic.chart.pernode.intro=This chart shows all accesses to course elements in week {0}.
 statistic.chart.pernode.total.intro=This chart shows all accesses to course elements based on the entire course data available (since {0}).
-statistic.intro=This statistic shows all accesses to course elements based on the entire course data available (since {0}) per week.
+statistic.intro=This statistic shows all accesses to course elements based on the entire course data available (since {0}) per week. <br/>The column title consists of year and calendar week. The entry "2011-7" for example means calendar week 7 in the year 2011.
 statistic.title=Weekly statistics