Engine-Twitter: implemented /reply command (closes: #384)
Engine-Twitter: added index support for /reply and /retweet commands
Travis-CI: build Debian packages
Debian: removed obsolete build_jabber-net_with_default_compiler patch
Debian: refreshed quilt patches
Travis-CI: install gtk-sharp2-gapi and libgtkspell-dev as needed as build-dep
Travis-CI: rename and extract tarball and move to the right location for dpkg-buildpackage
Debian: use ./autogen.sh only if available
Merge branch 'stable'

Conflicts:
	.travis.yml
	debian/patches/build_db4o_with_default_compiler.patch
Revert "[Debian] Apply quilt patches during build"

This reverts commit d640f9b0baadf19e8aba77f667ed7b4a4825d1cb.
Revert "[Debian] Added quilt to build dependencies"

This reverts commit 44a61f1297d3606a4c01adb7e2ddd3fa506081d8.
Debian: bumped epoch and changed version suffix to +dev for the daily PPA
Engine(-Tests): recursive html parsing used same TextMessagePartModel in multiple places

when setting the text of a specific TextMessagePartModel, the text somewhere else in the message also changed
now there are unit tests checking for such behavior
Engine(-Twitter): Refactored newline normalization into MessageBuilder

Conflicts:
	src/Engine/Messages/MessageBuilder.cs
Engine: erasing newlines caused words to be stuck together of HTML messages
Merge branch 'stable'

Conflicts:
	src/Engine-Twitter/Protocols/Twitter/TwitterMessageBuilder.cs
	src/Engine/Messages/MessageBuilder.cs
Engine(-XMPP), Frontend-GNOME: updating a tab's title was not possible, but required for xmpp person chats

previously this was done by removing the chat and adding a new one