Correct the appdata file name

It has to match the desktop file name.
Merge pull request #216 from kalev/appdata-file-name

Correct the appdata file name
Use vaapisink instead of xvimagesink for videos

On my setup corebird crashes with this backtrace when trying to watch an
embedded video for a tweet:

0 0x000000302f82f8e0 in video_orc_unpack_NV12 () from
/lib64/libgstvideo-1.0.so.0
1 0x000000302f81276f in unpack_NV12 () from /lib64/libgstvideo-1.0.so.0
2 0x00007fffe7bedb17 in videoconvert_convert_generic () from
/usr/lib64/gstreamer-1.0/libgstvideoconvert.so
3 0x00007fffe7bec83e in gst_video_convert_transform_frame () from
/usr/lib64/gstreamer-1.0/libgstvideoconvert.so
4 0x000000302f818d9e in gst_video_filter_transform () from
/lib64/libgstvideo-1.0.so.0
5 0x000000302ec3597e in gst_base_transform_handle_buffer () from
/lib64/libgstbase-1.0.so.0
6 0x000000302ec361c5 in gst_base_transform_chain () from
/lib64/libgstbase-1.0.so.0
7 0x00000030278654e6 in gst_pad_push_data () from
/lib64/libgstreamer-1.0.so.0
8 0x000000302ec363d6 in gst_base_transform_chain () from
/lib64/libgstbase-1.0.so.0
9 0x00000030278654e6 in gst_pad_push_data () from
/lib64/libgstreamer-1.0.so.0
10 0x000000302785718b in gst_proxy_pad_chain_default () from
/lib64/libgstreamer-1.0.so.0
11 0x00000030278654e6 in gst_pad_push_data () from
/lib64/libgstreamer-1.0.so.0
12 0x00007fffec11704f in gst_queue_loop () from
/usr/lib64/gstreamer-1.0/libgstcoreelements.so
13 0x0000003027893f09 in gst_task_func () from
/lib64/libgstreamer-1.0.so.0
14 0x0000003003872496 in g_thread_pool_thread_proxy () from
/lib64/libglib-2.0.so.0
15 0x0000003003871abd in g_thread_proxy () from /lib64/libglib-2.0.so.0
16 0x0000003001c08141 in start_thread () from /lib64/libpthread.so.0
17 0x00000030018ec65d in clone () from /lib64/libc.so.6

From the logs it looks like it's using the VAAPI plugin which apparently
doesn't play well with xvimagesink[1][2]. Switching to vaapisink fixes
the video playback for me.

[1] https://bugs.tizen.org/jira/si/jira.issueviews:issue-html/PTREL-792/PTREL-792.html
[2] https://bugs.tizen.org/jira/browse/TIVI-437
Update org.baedert.corebird.appdata.xml.in

Updated the licence tag to metadata licence (appdata xml spec change), and added a summary
Merge pull request #217 from mrpdaemon/use-vaapisink

Use vaapisink instead of xvimagesink for videos
tests: Add a hashtag filter test
Merge branch 'master' of https://github.com/baedert/corebird
data/.gitignore: update for appdata
FilterListEntry: Also remove from UI when deleting filter

No idea where this got lost.
FilterPage: Show better confirmation when deleting filters

Use a stack and show confirm/cancel button in there, just like we do for
lists.
dm-thread-entry: Unify top- and bottom border of the avatar
Revert "refine message list spacing"

This reverts commit 8e10831b846cf779a1d0567c632fbaf853021c3e.
Revert "use adwaita icon theme"

This reverts commit f0d4b4c36a774409422248c311d9215ea2e6d395.
Revert "TweetListEntry: Remove custom draw implementation"

This reverts commit d196841c2642b666933e02157f5a84f76ebb8915.
Revert "css: Give each tweet a border-bottom"

This reverts commit 95ef95796d5752ecfc1aca2a473395db6e46a88a.
filter-list-entry: Fix label of delete_button
style: Transparentize the bg of tweet detail buttons
Make filters caseless by default

Fuck it.

closes #187
closes #190
tweet-info-page: Reduce the text_label's margin_top
Merge branch 'master' into design

Conflicts:
	data/symbolics/Makefile.am
	data/symbolics/corebird-filter-symbolic.svg
	ui/tweet-info-page.ui
	ui/tweet-list-entry.ui