Mentions are now separated into 'this room' and 'all rooms'
tab., which allows the user to filter on the current room
if they desire.  Should add additional logic in the future
to show which room the mention was in the for the 'all rooms'
view.

Currently translated at 100.0% (195 of 195 strings)

Translation: Nheko/nheko
Translate-URL: http://weblate.nheko.im/projects/nheko/nheko-master/en/

Currently translated at 97.3% (180 of 185 strings)

Translation: Nheko/nheko
Translate-URL: http://weblate.nheko.im/projects/nheko/nheko-master/fi/

Currently translated at 97.8% (181 of 185 strings)

Translation: Nheko/nheko
Translate-URL: http://weblate.nheko.im/projects/nheko/nheko-master/de/

Currently translated at 97.8% (181 of 185 strings)

Translation: Nheko/nheko
Translate-URL: http://weblate.nheko.im/projects/nheko/nheko-master/de/

Currently translated at 98.9% (183 of 185 strings)

Translation: Nheko/nheko
Translate-URL: http://weblate.nheko.im/projects/nheko/nheko-master/en/

Fix merge conflicts with weblate translation files.

Currently translated at 94.8% (165 of 174 strings)

Translation: Nheko/nheko
Translate-URL: http://weblate.nheko.im/projects/nheko/nheko-master/fi/

Currently translated at 96.6% (168 of 174 strings)

Translation: Nheko/nheko
Translate-URL: http://weblate.nheko.im/projects/nheko/nheko-master/en/

Currently translated at 93.1% (162 of 174 strings)

Translation: Nheko/nheko
Translate-URL: http://weblate.nheko.im/projects/nheko/nheko-master/de/

Currently translated at 93.1% (162 of 174 strings)

Translation: Nheko/nheko
Translate-URL: http://weblate.nheko.im/projects/nheko/nheko-master/de/

Fixes "sent an audio file" replies, that were actually replies to text
messages.

I'm not sure, if that is the right way, but Qt doesn't really have a way
to format custom localised dates, so I tried to find the closest
approximations to what we currently have.

Relates to #69

Currently translated at 37.4% (65 of 174 strings)

Translation: Nheko/nheko
Translate-URL: http://weblate.nheko.im/projects/nheko/nheko-master/de/

Currently translated at 34.5% (60 of 174 strings)

Translation: Nheko/nheko
Translate-URL: http://weblate.nheko.im/projects/nheko/nheko-master/de/

Currently translated at 31.6% (55 of 174 strings)

Translation: Nheko/nheko
Translate-URL: http://weblate.nheko.im/projects/nheko/nheko-master/en/

Currently translated at 5.2% (9 of 174 strings)

Translation: Nheko/nheko
Translate-URL: http://weblate.nheko.im/projects/nheko/nheko-master/en/

Currently translated at 5.2% (9 of 174 strings)

Translation: Nheko/nheko
Translate-URL: http://weblate.nheko.im/projects/nheko/nheko-master/en/

Currently translated at 48.9% (85 of 174 strings)

Translation: Nheko/nheko
Translate-URL: http://weblate.nheko.im/projects/nheko/nheko-master/de/

Currently translated at 3.4% (6 of 174 strings)

Translation: Nheko/nheko
Translate-URL: http://weblate.nheko.im/projects/nheko/nheko-master/en/

Respect system styling
Increase size of emojis (to remove empty space)
Add hover effect (partially adresses #41)
Less hardcoding of sizes
Use emoji font (color)

Mentions are now an '@' icon in the upper right.

UI Popup is now a smaller dialog.

Still lots of work to be done here.

If the QMimeData contains an image, it actually has a mime type of
application/x-qt-image. At least in some cases accessing the image/*
data returns a 0 length array. Accessing the data via ->imageData works
however. So we use that as our accessor and pass it to the preview
dialog.

fixes "Attribute Qt::AA_EnableHighDpiScaling must be set before
QCoreApplication is created."