Merge pull request #20 from SonkinVlad/feature

Rename folder /src/main/extansions/ to /src/main/extensions/
Merge pull request #22 from SonkinVlad/feature2

Optimize HTML files, fix some mistakes.
update readme.md
reformat statistic page
Merge branch 'linker_dev'
Merge branch 'master' of https://github.com/b0noI/linkshorter

Conflicts:
	src/main/webapp/stat.html
Initial mock firefox extension
Merge branch 'master' into linker_dev
Renaming directory with extensions source code
Minor modifications, icon change
Adding icons
Added panel to the button
Basic form for displaying link
Fix of bug with iframe in panel