Fixed several bugs

...in/java/de/kuschku/libquassel/client/IdentityManager.java

...ain/java/de/kuschku/libquassel/client/NetworkManager.java

.../java/de/kuschku/libquassel/localtypes/BacklogFilter.java

.../libquassel/localtypes/backlogstorage/BacklogStorage.java

...assel/localtypes/backlogstorage/HybridBacklogStorage.java

...kuschku/libquassel/syncables/types/impl/AliasManager.java

...schku/libquassel/syncables/types/impl/BacklogManager.java

...kuschku/libquassel/syncables/types/impl/BufferSyncer.java

...ku/libquassel/syncables/types/impl/BufferViewManager.java

...ku/libquassel/syncables/types/impl/IgnoreListManager.java

.../libquassel/syncables/types/interfaces/QAliasManager.java

...ibquassel/syncables/types/interfaces/QBacklogManager.java

...uassel/syncables/types/interfaces/QBufferViewManager.java

...uassel/syncables/types/interfaces/QIgnoreListManager.java

...chku/quasseldroid_ng/ui/chat/chatview/MessageAdapter.java

...asseldroid_ng/ui/chat/drawer/BufferViewConfigAdapter.java

...e/kuschku/quasseldroid_ng/ui/chat/drawer/NetworkItem.java

...uschku/quasseldroid_ng/ui/chat/fragment/ChatFragment.java

...hku/quasseldroid_ng/ui/chat/nicklist/NickListAdapter.java

...d_ng/ui/coresettings/identity/IdentitySpinnerAdapter.java