Merge pull request #119 from houke/master

Add print styling, fix margin
Correctly precompile print sheet as well
Remove unused labels_users table from schema dump
Add print button to ticket view
Document all feature requests.

We received several feature requests: #92, #93, #102, #104, #120. To cleanup the issue list we document these in one place: the README file.
Add request about welcome mail to feature requests (#121).
Added UK (Ukrainian) language.
Minor fixes
Merge pull request #122 from stormsw/Ukranian_Language

Ukranian language
Add author
Add Russian translation. Thanks lemial!
Merge pull request #124 from houke/master

Fix aside hover for label color selection
styling device
replace new ticket button to sidebar
reposition export button
change of styling, added some css-helpers
removed inline css & replaced with helper-classes
Fix bug: correctly close <a> tag
Allow assigning users to tickets from rules
Do not use last visitors locale when sending notification mails