Hi,
to be hones with you, none of these error messages are related to our Template.
1st screenshot is related to "Revolution Slider" (which is a 3rd party slideshow -- they are not error messages, just notification messages about will be deprecated functionalities in the upcoming PHP version(s).. You should upgrade the Revolution Slider to latest version to avoid those messages or simply disable the error reporting for deprecation notifications -- google for it)
2nd screenshot is related to your server. Apparently some of the required functions have been disabled on your php.ini file (check this topic:
forum.joomla.org/viewtopic.php?t=900365 for more info)
3rd screenshots are related to Joomla Core (sounds like incompatibility issues between PHP version and Joomla version to me)
I would recommend you to update the Joomla to latest version. Your server's PHP version might not be compatible with the Joomla version you currently use. Most of the time, those kinds of problems are taken care by updating the Joomla... BUT!! BACK UP FIRST IN CASE THINGS GO CRAZY AFTER UPDATE... and i recommend you to try the upgrading on your localhost first.
Regards.