Rewrote all Syncables and the structure of the libquassel Client object

app/src/main/java/de/kuschku/util/backports/Optional.java

app/src/main/java/de/kuschku/util/backports/Optionals.java

app/src/main/java/de/kuschku/util/backports/Present.java

app/src/main/java/de/kuschku/util/backports/Stream.java

...java/de/kuschku/util/backports/collectors/Collectors.java

...a/de/kuschku/util/backports/collectors/ListCollector.java

...va/de/kuschku/util/backports/collectors/MapCollector.java

...kuschku/util/certificates/CertificateDatabaseHandler.java

...n/java/de/kuschku/util/certificates/CertificateUtils.java

...e/kuschku/util/certificates/SQLiteCertificateManager.java

...main/java/de/kuschku/util/instancestateutil/Storable.java

...rc/main/java/de/kuschku/util/instancestateutil/Store.java

app/src/main/java/de/kuschku/util/irc/IrcCaseMapper.java

app/src/main/java/de/kuschku/util/irc/IrcFormatHelper.java

app/src/main/java/de/kuschku/util/irc/IrcUserUtils.java

app/src/main/java/de/kuschku/util/irc/ModeUtils.java

app/src/main/java/de/kuschku/util/niohelpers/Helper.java

.../main/java/de/kuschku/util/niohelpers/WrappedChannel.java

...c/main/java/de/kuschku/util/observables/AutoScroller.java

...n/java/de/kuschku/util/observables/ContentComparable.java