Merge pull request yakyak#1108 from AlessSala/show-img-prevw-attachme…

…nts-#620-feature

Add show-hide preview for attachment images too

correct fresh login

closes yakyak#1006

updating hangupsjs to v1.3.8 to fix

updating hangupsjs to v1.3.8 to fix

bumps some package versions

bump version to 1.5.1 to avoid user confusion

update package.lock

adds turkish to languages

remove unecessary position in app.coffee