Introduce new, Hugo templates based, website (#713)

* Add new hugo-based website for hawkBit

Signed-off-by: Jeroen Laverman <jeroen.laverman@bosch-si.com>

* Fix broken links + wordings
- , i.e. -> i.e,
- , e.g. -> e.g.,
- hawkbit -> hawkBit
- don't -> do not
- isn't -> is not

Signed-off-by: Jeroen Laverman <jeroen.laverman@bosch-si.com>

* Remove old documentation and add maven integration

Signed-off-by: Jeroen Laverman <jeroen.laverman@bosch-si.com>

* Add Intellij files to ignore

Signed-off-by: Jeroen Laverman <jeroen.laverman@bosch-si.com>

* Update README

Signed-off-by: Jeroen Laverman <jeroen.laverman@bosch-si.com>

* Update Copyright header
* exclude website artifacts

Signed-off-by: Jeroen Laverman <jeroen.laverman@bosch-si.com>

* Harmonize usage of i.e. and e.g.

Signed-off-by: Jeroen Laverman <jeroen.laverman@bosch-si.com>

* Add remark for windows user

Signed-off-by: Jeroen Laverman <jeroen.laverman@bosch-si.com>

* Fix indention

Signed-off-by: Jeroen Laverman <jeroen.laverman@bosch-si.com>

* Introduce review findings

Signed-off-by: Jeroen Laverman <jeroen.laverman@bosch-si.com>

* Change image in 'run hawkbit' guide

Signed-off-by: Jeroen Laverman <jeroen.laverman@bosch-si.com>

docs/static/css/hawkbit.css

@@ -0,0 +1,53 @@
+
+.copyright {
+    margin-top: 5em;
+    margin-bottom: 1em;
+    overflow: auto;
+}
+
+.copyright a {
+    border-bottom-style: none;
+}
+
+.copyright p {
+    margin-top: 0;
+}
+
+.copyright div.logo {
+    float: right;
+    width: 20%;
+    padding-bottom: 2%;
+}
+
+.copyright .quickLinks a {
+    float: left;
+    padding-right: 2em;
+}
+
+.jumbotron {
+    padding-bottom: 1em;
+    padding-top: 2em;
+    text-align: center;
+    font-size: xx-large;
+    color: #734dba;
+}
+
+.banner div.drawerlogo {
+    background: white;
+    border-radius: 100%;
+    width: 64px;
+    height: 64px;
+    transition: box-shadow .4s;
+}
+
+.banner div.drawerlogo:hover {
+    box-shadow: 0 4px 7px rgba(0, 0, 0, .23), 0 8px 25px rgba(0, 0, 0, .05);
+}
+
+.banner .drawerlogo img {
+    height: 100%;
+    width: 100%;
+    padding: 15%;
+    position: relative;
+    top: -3px
+}