Fix stragglers that were not properly renamed in the XDG standardization commits

parts/fileselector/kdevfileselector.desktop

@@ -80,7 +80,7 @@ GenericName[tg]=Селектори файлҳо
 GenericName[tr]=Dosya Seçici
 GenericName[zh_CN]=文件选择器
 GenericName[zh_TW]=檔案選擇器
-Icon=fileopen
+Icon=document-open
 X-TDE-ServiceTypes=TDevelop/Plugin
 X-TDE-Library=libkdevfileselector
 X-TDevelop-Version=5

parts/grepview/kdevgrepview.desktop

@@ -78,7 +78,7 @@ GenericName[tg]=Интегратсияи Grep
 GenericName[tr]=Grep Önucu
 GenericName[zh_CN]=Grep 前端
 GenericName[zh_TW]=Grep 前端介面
-Icon=find
+Icon=edit-find
 X-TDE-ServiceTypes=TDevelop/Plugin
 X-TDE-Library=libkdevgrepview
 X-TDevelop-Version=5

parts/snippet/kdevsnippet.desktop

@@ -94,7 +94,7 @@ GenericName[tg]=Тайёр намудани кодҳо
 GenericName[tr]=Kod Parçacıkları
 GenericName[zh_CN]=代码片段
 GenericName[zh_TW]=程式碼片段
-Icon=editcut
+Icon=edit-cut
 X-TDE-ServiceTypes=TDevelop/Plugin
 X-TDevelop-Scope=Global
 X-TDE-Library=libkdevsnippet