remove this.this member
Merge pull request #527 from emdete/thisthis

remove this.this member
Update Spanish Translations
Merge pull request #528 from kruks23/translation6

Update Spanish Translations
fixed npes
version bump to 0.7.3 and changelog
updated mtm to latest version
updated flattr url
added rendered version of logo
redesigned contact details a bit
added missing border
use setAlpha(float) method, not the depricated one
reworked muc details and contact details a bit
changed card boarder a bit
Merge pull request #543 from emdete/dedepricate

use setAlpha(float) method, not the deprecated one
basic image over http downloading
renaming
fixed rare npe
possible work around for notification bug
read image bounds on downloaded image