Refs #415 - incorrectly typed usernames not highlighted

It works for twitter, because tweets contain a list with referenced
(and thus recognised) users. This information is not available for
identi.ca, so there misspelled user names are still highlighted.
change thumbnails to use max-width/max-height to prevent stretching of small images
add copy func to context menu in chrome extension
Merge pull request #464 from mmyjona/feature-copy-context-menu-in-chrome

add copy func to context menu in chrome extension
improve russian translation
do not hardcode platform name in python code
width of 50px is too narrow for some languages: disable word wrapping instead
correct indent
remove private data from console output
do not parsing stream data at wrong time
fix avatar
revert the default value of USE_GTKNOTIFICATION_IN_NATIVE_PLATFORM
fix http proxy connection
Merge pull request #468 from danfe/master

Update Russian translation
Merge pull request #462 from damianb/thumbnail-max-width

change thumbnails to use max-width/max-height to prevent stretching of small images
Merge pull request #422 from johanv/fix-415

Refs #415 - incorrectly typed usernames not highlighted
do not change the text of user's tweet automaticly without user's permission
Update data/_locales/bg/messages.json
fix block logout for qt only hotot
Merge pull request #475 from fanfolet/patch-1

Update data/_locales/bg/messages.json