feat: Handle privilege escalation gracefully even without PolicyKit (#599)

* feat: Handle privilege escalation gracefully even without PolicyKit

* build: upgrade tslint => 5.9.1

* build: add uhk-agent/package-lock.json

* feat: add error animation

* fix: display agent icon when user use ALT + TAB

package-lock.json

@@ -1,6 +1,6 @@
 {
   "name": "uhk-agent",
-  "version": "1.1.2",
+  "version": "1.1.3",
   "lockfileVersion": 1,
   "requires": true,
   "dependencies": {
@@ -1414,9 +1414,9 @@
       "dev": true
     },
     "commander": {
-      "version": "2.11.0",
-      "resolved": "https://registry.npmjs.org/commander/-/commander-2.11.0.tgz",
-      "integrity": "sha512-b0553uYA5YAEGgyYIGYROzKQ7X5RAqedkfjiZxwi0kL1g3bOaBNNZfYkzt/CL0umgD5wc9Jec2FbB98CjkMRvQ==",
+      "version": "2.15.1",
+      "resolved": "https://registry.npmjs.org/commander/-/commander-2.15.1.tgz",
+      "integrity": "sha512-VlfT9F3V0v+jr4yxPc5gg9s62/fIVWsd2Bk2iD435um1NlGMYdVCq+MjcXnhYq2icNOizHr1kK+5TI6H0Hy0ag==",
       "dev": true
     },
     "compare-func": {
@@ -9428,9 +9428,9 @@
       "dev": true
     },
     "resolve": {
-      "version": "1.4.0",
-      "resolved": "https://registry.npmjs.org/resolve/-/resolve-1.4.0.tgz",
-      "integrity": "sha512-aW7sVKPufyHqOmyyLzg/J+8606v5nevBgaliIlV7nUpVMsDnoBGV/cbSLNjZAg9q0Cfd/+easKVKQ8vOu8fn1Q==",
+      "version": "1.6.0",
+      "resolved": "https://registry.npmjs.org/resolve/-/resolve-1.6.0.tgz",
+      "integrity": "sha512-mw7JQNu5ExIkcw4LPih0owX/TZXjD/ZUF/ZQ/pDnkw3ZKhDcZZw5klmBlj6gVMwjQ3Pz5Jgu7F3d0jcDVuEWdw==",
       "dev": true,
       "requires": {
         "path-parse": "1.0.5"
@@ -10843,29 +10843,51 @@
       }
     },
     "tslib": {
-      "version": "1.7.1",
-      "resolved": "https://registry.npmjs.org/tslib/-/tslib-1.7.1.tgz",
-      "integrity": "sha1-vIAEFkaRkjp5/oN4u+s9ogF1OOw=",
+      "version": "1.9.0",
+      "resolved": "https://registry.npmjs.org/tslib/-/tslib-1.9.0.tgz",
+      "integrity": "sha512-f/qGG2tUkrISBlQZEjEqoZ3B2+npJjIf04H1wuAv9iA8i04Icp+61KRXxFdha22670NJopsZCIjhC3SnjPRKrQ==",
       "dev": true
     },
     "tslint": {
-      "version": "5.5.0",
-      "resolved": "https://registry.npmjs.org/tslint/-/tslint-5.5.0.tgz",
-      "integrity": "sha1-EOjas+MGH6YelELozuOYKs8gpqo=",
+      "version": "5.9.1",
+      "resolved": "https://registry.npmjs.org/tslint/-/tslint-5.9.1.tgz",
+      "integrity": "sha1-ElX4ej/1frCw4fDmEKi0dIBGya4=",
       "dev": true,
       "requires": {
         "babel-code-frame": "6.26.0",
-        "colors": "1.1.2",
-        "commander": "2.11.0",
+        "builtin-modules": "1.1.1",
+        "chalk": "2.3.2",
+        "commander": "2.15.1",
         "diff": "3.4.0",
         "glob": "7.1.2",
+        "js-yaml": "3.10.0",
         "minimatch": "3.0.4",
-        "resolve": "1.4.0",
+        "resolve": "1.6.0",
         "semver": "5.4.1",
-        "tslib": "1.7.1",
-        "tsutils": "2.12.0"
+        "tslib": "1.9.0",
+        "tsutils": "2.26.1"
       },
       "dependencies": {
+        "ansi-styles": {
+          "version": "3.2.1",
+          "resolved": "https://registry.npmjs.org/ansi-styles/-/ansi-styles-3.2.1.tgz",
+          "integrity": "sha512-VT0ZI6kZRdTh8YyJw3SMbYm/u+NqfsAxEpWO0Pf9sq8/e94WxxOpPKx9FR1FlyCtOVDNOQ+8ntlqFxiRc+r5qA==",
+          "dev": true,
+          "requires": {
+            "color-convert": "1.9.1"
+          }
+        },
+        "chalk": {
+          "version": "2.3.2",
+          "resolved": "https://registry.npmjs.org/chalk/-/chalk-2.3.2.tgz",
+          "integrity": "sha512-ZM4j2/ld/YZDc3Ma8PgN7gyAk+kHMMMyzLNryCPGhWrsfAuDVeuid5bpRFTDgMH9JBK2lA4dyyAkkZYF/WcqDQ==",
+          "dev": true,
+          "requires": {
+            "ansi-styles": "3.2.1",
+            "escape-string-regexp": "1.0.5",
+            "supports-color": "5.3.0"
+          }
+        },
         "glob": {
           "version": "7.1.2",
           "resolved": "https://registry.npmjs.org/glob/-/glob-7.1.2.tgz",
@@ -10879,16 +10901,31 @@
             "once": "1.4.0",
             "path-is-absolute": "1.0.1"
           }
+        },
+        "has-flag": {
+          "version": "3.0.0",
+          "resolved": "https://registry.npmjs.org/has-flag/-/has-flag-3.0.0.tgz",
+          "integrity": "sha1-tdRU3CGZriJWmfNGfloH87lVuv0=",
+          "dev": true
+        },
+        "supports-color": {
+          "version": "5.3.0",
+          "resolved": "https://registry.npmjs.org/supports-color/-/supports-color-5.3.0.tgz",
+          "integrity": "sha512-0aP01LLIskjKs3lq52EC0aGBAJhLq7B2Rd8HC/DR/PtNNpcLilNmHC12O+hu0usQpo7wtHNRqtrhBwtDb0+dNg==",
+          "dev": true,
+          "requires": {
+            "has-flag": "3.0.0"
+          }
         }
       }
     },
     "tsutils": {
-      "version": "2.12.0",
-      "resolved": "https://registry.npmjs.org/tsutils/-/tsutils-2.12.0.tgz",
-      "integrity": "sha1-yJKoTI8vjeE/jvMsLFw4tFfM6sY=",
+      "version": "2.26.1",
+      "resolved": "https://registry.npmjs.org/tsutils/-/tsutils-2.26.1.tgz",
+      "integrity": "sha512-bnm9bcjOqOr1UljleL94wVCDlpa6KjfGaTkefeLch4GRafgDkROxPizbB/FxTEdI++5JqhxczRy/Qub0syNqZA==",
       "dev": true,
       "requires": {
-        "tslib": "1.7.1"
+        "tslib": "1.9.0"
       }
     },
     "tty-browserify": {