[IMPROVED] Unlock notification mails on auto-locks

* Added new token type: account_unlock
* Added update SQL File
* Updated base structure with new token type
* Added empty template
* Updated user class to send mail on failed passwords
* Added unlock account page to use tokens

Addresses #670
[ADDED] Account unlock mail on failed PIN
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The first Multi-coin environment using MPOS as a frontend.
Merge pull request #1219 from drainx/patch-1

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fixed spelling :D
Merge pull request #1236 from PesiHUN/patch-1

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Merge pull request #1239 from retal/patch-2

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Merge pull request #1213 from TheSerapher/issue-670-unlocks

[IMPROVED] Unlock notification mails on auto-locks
[INITIAL] Working version checks

* Check DB structure version, config file version and MPOS core version
* Added new Admin Dashboard to show this core information
* Cronjobs will be disabled if SQL files are not imported
 * SQL files must re-set the db_upgrade_required setting
* Cronjobs will disabled if config files are not updated
 * Simple config file update and version string update will fix this
* Added MPOS status overview
 * Cronjobs and Wallet information for now, others may be added later
* Added new navigation link for Admin Panel Dashboard
* Added new version file
 * Will require updates whenever DB or configs are updated
* Update SQL file that adds the DB_VERSION setting

This will address #1242 and already includes a huge chunk of changes
required to make this work.
[UPSTREAM] Upgraded smarty libraries

Fixes #1249 once merged.
Merge pull request #1250 from TheSerapher/issue-1249

[UPSTREAM] Upgraded smarty libraries
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Merge pull request #1254 from daygle/patch-2

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[FIX] Closing nocache tags

Fixes #1255 once merged.
Merge pull request #1259 from TheSerapher/issue-1255

[FIX] Closing nocache tags
[UPDATE] Check for upgrade later
Update README.md

Added 64bit as requirement if you want proper network hashrates.
[FIX] Caching issues with hybrid templates

* Create subfolders for cache/compiled files for themes

Fixes #1016 once merged.
[FIX] Empty / no template detection