Don't use custom icons

akonadi-contact/src/editor/im/CMakeLists.txt

-add_subdirectory( icons ) 
 add_subdirectory( protocols ) 
 
 install( FILES kaddressbookimprotocol.desktop DESTINATION ${KDE_INSTALL_KSERVICETYPES5DIR})

akonadi-contact/src/editor/im/icons/CMakeLists.txt

-
-ecm_install_icons( ICONS
-16-apps-aim_protocol.png   16-apps-groupwise_protocol.png  16-apps-irc_protocol.png     16-apps-meanwhile_protocol.png  16-apps-skype_protocol.png  16-apps-yahoo_protocol.png
-16-apps-gadu_protocol.png  16-apps-icq_protocol.png        16-apps-jabber_protocol.png  16-apps-msn_protocol.png        16-apps-sms_protocol.png
-DESTINATION
-${KDE_INSTALL_ICONDIR} THEME oxygen )

akonadi-contact/src/editor/im/protocols/aimprotocol.desktop

 [Desktop Entry]
 Type=Service
-Icon=aim_protocol
+Icon=im-aim
 X-KDE-ServiceTypes=KContacts/IMProtocol,KPluginInfo
 X-KDE-InstantMessagingKABCField=messaging/aim
 X-KDE-InstantMessagingKContactField=aim

akonadi-contact/src/editor/im/protocols/facebookprotocol.desktop

 [Desktop Entry]
 Type=Service
-Icon=facebook_protocol
+Icon=im-facebook
 X-KDE-ServiceTypes=KContacts/IMProtocol,KPluginInfo
 X-KDE-InstantMessagingKContactField=facebook
 X-KDE-InstantMessagingKABCField=messaging/facebook

akonadi-contact/src/editor/im/protocols/gaduprotocol.desktop

 [Desktop Entry]
 Type=Service
-Icon=gadu_protocol
+Icon=im-gadugadu
 X-KDE-ServiceTypes=KContacts/IMProtocol,KPluginInfo
 X-KDE-InstantMessagingKABCField=messaging/gadu
 X-KDE-InstantMessagingKContactField=gadugadu

akonadi-contact/src/editor/im/protocols/googletalkprotocol.desktop

 [Desktop Entry]
 Type=Service
-Icon=google_protocol
+Icon=im-google
 X-KDE-ServiceTypes=KContacts/IMProtocol,KPluginInfo
 X-KDE-InstantMessagingKABCField=messaging/googletalk
 X-KDE-InstantMessagingKContactField=googletalk

akonadi-contact/src/editor/im/protocols/groupwiseprotocol.desktop

 [Desktop Entry]
 Type=Service
-Icon=groupwise_protocol
+Icon=im-groupwise
 X-KDE-ServiceTypes=KContacts/IMProtocol,KPluginInfo
 X-KDE-InstantMessagingKABCField=messaging/groupwise
 

akonadi-contact/src/editor/im/protocols/icqprotocol.desktop

 [Desktop Entry]
 Type=Service
-Icon=icq_protocol
+Icon=im-icq
 X-KDE-ServiceTypes=KContacts/IMProtocol,KPluginInfo
 X-KDE-InstantMessagingKABCField=messaging/icq
 X-KDE-InstantMessagingKContactField=icq

akonadi-contact/src/editor/im/protocols/ircprotocol.desktop

 [Desktop Entry]
 Type=Service
-Icon=irc_protocol
+Icon=im-irc
 X-KDE-ServiceTypes=KContacts/IMProtocol,KPluginInfo
 X-KDE-InstantMessagingKABCField=messaging/irc
 Comment=Internet Relay Chat

akonadi-contact/src/editor/im/protocols/jabberprotocol.desktop

 [Desktop Entry]
 Type=Service
-Icon=jabber_protocol
+Icon=im-jabber
 X-KDE-ServiceTypes=KContacts/IMProtocol,KPluginInfo
 X-KDE-InstantMessagingKABCField=messaging/xmpp
 X-KDE-InstantMessagingKContactField=jabber

akonadi-contact/src/editor/im/protocols/meanwhileprotocol.desktop

 [Desktop Entry]
 Type=Service
-Icon=meanwhile_protocol
+Icon=im-meanwhile
 X-KDE-ServiceTypes=KContacts/IMProtocol,KPluginInfo
 X-KDE-InstantMessagingKABCField=messaging/meanwhile
 Comment=Meanwhile Protocol

akonadi-contact/src/editor/im/protocols/msnprotocol.desktop

 [Desktop Entry]
 Type=Service
-Icon=msn_protocol
+Icon=im-msn
 X-KDE-ServiceTypes=KContacts/IMProtocol,KPluginInfo
 X-KDE-InstantMessagingKABCField=messaging/msn
 X-KDE-InstantMessagingKContactField=msn

akonadi-contact/src/editor/im/protocols/skypeprotocol.desktop

 [Desktop Entry]
 Type=Service
-Icon=skype_protocol
+Icon=im-skype
 X-KDE-ServiceTypes=KContacts/IMProtocol,KPluginInfo
 X-KDE-InstantMessagingKABCField=messaging/skype
 X-KDE-InstantMessagingKContactField=skype

akonadi-contact/src/editor/im/protocols/smsprotocol.desktop

 [Desktop Entry]
 Type=Service
-Icon=sms_protocol
+Icon=im-sms
 X-KDE-ServiceTypes=KContacts/IMProtocol,KPluginInfo
 X-KDE-InstantMessagingKABCField=messaging/sms
 Comment=SMS Protocol

akonadi-contact/src/editor/im/protocols/twitterprotocol.desktop

 [Desktop Entry]
 Type=Service
-Icon=twitter_protocol
+Icon=im-twitter
 X-KDE-ServiceTypes=KContacts/IMProtocol,KPluginInfo
 X-KDE-InstantMessagingKContactField=twitter
 X-KDE-InstantMessagingKABCField=messaging/twitter

akonadi-contact/src/editor/im/protocols/yahooprotocol.desktop

 [Desktop Entry]
 Type=Service
-Icon=yahoo_protocol
+Icon=im-yahoo
 X-KDE-ServiceTypes=KContacts/IMProtocol,KPluginInfo
 X-KDE-InstantMessagingKABCField=messaging/yahoo
 X-KDE-InstantMessagingKContactField=yahoo