[ImgBot] Optimize images (#20)

*Total -- 28,391.47kb -> 24,718.71kb (12.94%)

/doc/source/images/pv6.png -- 92.99kb -> 50.67kb (45.51%)
/doc/source/images/pv4.png -- 98.32kb -> 53.82kb (45.26%)
/doc/source/images/pv5.png -- 106.09kb -> 59.19kb (44.21%)
/doc/source/images/mongo2.png -- 217.17kb -> 122.03kb (43.81%)
/doc/source/images/pvc3.png -- 91.42kb -> 51.90kb (43.24%)
/doc/source/images/pvc4.png -- 97.49kb -> 56.22kb (42.33%)
/portal/public/res/img/logo-outline.png -- 68.85kb -> 39.76kb (42.26%)
/doc/source/images/cr1.png -- 223.70kb -> 137.22kb (38.66%)
/doc/source/images/mongo1.png -- 190.81kb -> 117.87kb (38.23%)
/doc/source/images/pvc1.png -- 179.58kb -> 112.77kb (37.2%)
/doc/source/images/mongo4.png -- 69.53kb -> 44.39kb (36.17%)
/doc/source/images/docker2.png -- 194.62kb -> 124.82kb (35.87%)
/doc/source/images/cr3.png -- 213.60kb -> 138.77kb (35.03%)
/portal/public/res/css/images/Chat Button.png -- 2.15kb -> 1.40kb (34.94%)
/doc/source/images/pv3.png -- 201.10kb -> 131.60kb (34.56%)
/doc/source/images/pvc2.png -- 199.54kb -> 131.39kb (34.15%)
/doc/source/images/cloudctl2.png -- 327.66kb -> 216.15kb (34.03%)
/doc/source/images/mongo3.png -- 75.89kb -> 50.49kb (33.47%)
/doc/source/images/cr2.png -- 238.90kb -> 159.05kb (33.42%)
/doc/source/images/cloudctl1.png -- 273.29kb -> 182.10kb (33.36%)
/doc/source/images/pv1.png -- 269.85kb -> 182.11kb (32.51%)
/doc/source/images/pv2.png -- 256.11kb -> 173.40kb (32.3%)
/portal/public/res/css/images/Code Button.png -- 1.53kb -> 1.06kb (30.31%)
/doc/source/images/8.png -- 106.91kb -> 75.13kb (29.73%)
/doc/source/images/architecture.png -- 53.98kb -> 37.97kb (29.66%)
/doc/source/images/13.png -- 130.27kb -> 91.73kb (29.59%)
/doc/source/images/11.png -- 131.88kb -> 93.88kb (28.81%)
/doc/source/images/12.png -- 228.09kb -> 167.73kb (26.46%)
/doc/source/images/14.png -- 186.28kb -> 139.98kb (24.85%)
/doc/source/images/1.png -- 145.36kb -> 110.24kb (24.16%)
/doc/source/images/5.png -- 125.92kb -> 95.61kb (24.08%)
/doc/source/images/6.png -- 300.09kb -> 229.48kb (23.53%)
/portal/public/res/img/sp/etisalat.png -- 119.78kb -> 92.38kb (22.88%)
/doc/source/images/2.jpg -- 15.67kb -> 12.11kb (22.74%)
/doc/source/images/10.png -- 126.79kb -> 98.13kb (22.61%)
/portal/public/res/img/logo.png -- 85.14kb -> 66.02kb (22.46%)
/portal/public/res/img/sp/innovate.png -- 85.14kb -> 66.02kb (22.46%)
/doc/source/images/7.png -- 196.63kb -> 153.89kb (21.74%)
/doc/source/images/9.png -- 336.30kb -> 264.65kb (21.31%)
/portal/public/res/img/account-types/prepaid.png -- 32.53kb -> 25.72kb (20.91%)
/.bluemix/secure-lock-helm.png -- 2.87kb -> 2.37kb (17.67%)
/doc/source/images/3.jpg -- 24.97kb -> 20.89kb (16.37%)
/doc/source/images/docker1.png -- 451.25kb -> 378.62kb (16.1%)
/portal/public/res/img/sp/dewa.png -- 57.92kb -> 48.66kb (15.98%)
/doc/source/images/4.jpg -- 32.91kb -> 28.27kb (14.08%)
/doc/source/images/screens-1.png -- 1,244.46kb -> 1,087.85kb (12.58%)
/doc/source/images/screens-2.png -- 581.93kb -> 514.24kb (11.63%)
/.bluemix/toolchain.png -- 43.11kb -> 38.19kb (11.42%)
/portal/public/res/img/sp/du.png -- 14.17kb -> 13.14kb (7.28%)
/portal/public/res/css/images/hero.jpg -- 19,840.91kb -> 18,427.66kb (7.12%)

Author: imgbot[bot]