[ImgBot] Optimize images

*Total -- 5,350.77kb -> 5,168.69kb (3.4%)

/css/ajax-loader.gif -- 3.13kb -> 1.77kb (43.39%)
/images/loc.png -- 1.92kb -> 1.10kb (42.96%)
/images/partner-3.png -- 23.09kb -> 16.32kb (29.34%)
/images/partner-4.png -- 31.70kb -> 23.03kb (27.36%)
/images/partner-1.png -- 15.91kb -> 11.63kb (26.89%)
/images/favicon.ico.png -- 5.90kb -> 4.33kb (26.54%)
/images/partner-2.png -- 27.27kb -> 20.28kb (25.62%)
/images/partner-5.png -- 24.17kb -> 18.22kb (24.61%)
/fonts/open-iconic/open-iconic.svg -- 53.50kb -> 50.63kb (5.37%)
/images/work-4.jpg -- 1,018.98kb -> 983.37kb (3.49%)
/images/bg_1.png -- 1,284.90kb -> 1,241.81kb (3.35%)
/images/work-3.jpg -- 535.54kb -> 520.71kb (2.77%)
/fonts/ionicons/fonts/ionicons.svg -- 305.86kb -> 297.39kb (2.77%)
/images/image_2.jpg -- 74.65kb -> 72.66kb (2.67%)
/images/work-5.jpg -- 741.21kb -> 721.94kb (2.6%)
/images/image_1.jpg -- 150.09kb -> 146.52kb (2.38%)
/images/staff-3.jpg -- 118.53kb -> 115.83kb (2.28%)
/images/work-1.jpg -- 427.37kb -> 418.00kb (2.19%)
/images/staff-4.jpg -- 80.56kb -> 78.95kb (2%)
/images/person_2.jpg -- 46.82kb -> 45.91kb (1.93%)
/fonts/flaticon/font/Flaticon.svg -- 36.60kb -> 36.21kb (1.05%)
/images/staff-1.jpg -- 83.49kb -> 83.18kb (0.37%)
/images/bg_1.jpg -- 150.25kb -> 149.70kb (0.37%)
/images/about1.jpg -- 109.33kb -> 109.18kb (0.13%)

Signed-off-by: ImgBotApp <ImgBotHelp@gmail.com>

Author: ImgBotApp