Fix some issues with hotkeys in ChannelSelection Context Menu

E.g. when rename or remove should not be possible. Check for being in a
bouquet. In addition add confirmation for remove when removing bouquets
New dutch translations, thanks Tech
Do not save root when root is changed by numberZap in ChannelSelection

Thanks Dima73
Change hotkeys in channelselection contectmenu to align linux style

As suggested by IMS

In addition enable wrap-a-round in bouquetSelector and add hotkey to the
add service to userbouquet.
Merge branch 'master' of git://git.code.sf.net/p/openpli/enigma2