Closed issues

• #3: Notification icon counter is cut.
• #4: Item editor page: images sorting.
• #5: Demo pages should have links "download", "documentation", "view on GitHub".
• #6: Get rid of global functions.
• #8: Sparkline charts hover labels are broken.
• #9: Sometimes charts are not redrawn on theme change.
• #10: Texts centering in auth dialogs.
• #11: Add LICENSE.
• #12: Logout link is wrong.
• #14: Add dist html beautifier.
• #15: Items list overflow issue on mobile.