sysPass 2.0-RC4

• [ADD] Added copy account button
• [ADD] Show icon when viewing linked account password
• [MOD] Minor UI tweaks
• [MOD] Checks for PHP version lower than 7.1
• [MOD] Allows to select user's group in the account's main group select.
• [FIX] Fixed wrong behavior when searching after a page navigation.
• [FIX] Fixed bug when saving an edited notice.
• [FIX] Fixed bug when retrieving account ACL to show accesses box.
• [FIX] Fixed bug on API token deletion.
• [MOD] Improved event log management
• [FIX] Fixed hidden accesses box when account creation view is shown.
• [FIX] Fixed account creation when copying from another one.
• [FIX] Skip views data from backup.
• [MOD] Minor tweaks