Port Backend to SQLite/Sequelize (removes MongoDB), Support Electron (#14)

* The MongoDB/Mongoose data storage is removed in favor of Sequelize. This abstracts over SQLite or RDBMs like PostgreSQL and MSSQL. The default is SQLite, which significantly simplifies deployments in end-user environments.

* As Spacedeck now has no more mandatory server dependencies, we can wrap it in Electron and ship it as a desktop application.

* Removes docker-compose.yml

* First version of import UI

views/partials/tool/background.html

@@ -79,14 +79,14 @@
   </div-->
 
   <div class="" v-show="background_mode=='image'" v-if="active_space">
-    <div class="background-image" v-bind:style="{height: '233px', 'background-image':'url('+active_space.advanced.background_uri+')', 'margin': '6px', 'border-radius': '3px'}" v-if="active_space.advanced.background_uri && !space_background_uploading">
+    <div class="background-image" v-bind:style="{height: '233px', 'background-image':'url('+active_space.background_uri+')', 'margin': '6px', 'border-radius': '3px'}" v-if="active_space.background_uri && !space_background_uploading">
     </div>
         
     <div class="progress state-processing" v-if="space_background_uploading"> 
       <div class="spinner"></div>
     </div>
 
-    <div class="dialog-section no-b adapt" v-if="!active_space.advanced.background_uri && !space_background_uploading" v-on:touchstart="handle_touch_select_background_image()">
+    <div class="dialog-section no-b adapt" v-if="!active_space.background_uri && !space_background_uploading" v-on:touchstart="handle_touch_select_background_image()">
       <label class="btn btn-xxl btn-transparent btn-icon">
         <span class="icon icon-picture-upload"></span>
         <input id="background-uploader" type="file" accept="image/*" v-on:change="handle_section_background_upload($event)">
@@ -94,9 +94,9 @@
       <p>[[__("upload_background_caption")]]</p>
     </div>
 
-    <div class="dialog-section no-p no-flex" v-if="active_space.advanced.background_uri">
+    <div class="dialog-section no-p no-flex" v-if="active_space.background_uri">
       <div class="btn-cluster">
-        <label class="btn btn-transparent btn-block text-center" v-if="active_space.advanced.background_uri" v-on:touchstart="handle_touch_select_background_image()"> 
+        <label class="btn btn-transparent btn-block text-center" v-if="active_space.background_uri" v-on:touchstart="handle_touch_select_background_image()"> 
           <input id="background-uploader" type="file" accept="image/*" v-on:chang="handle_section_background_upload($event)">
           <span class="icon icon-picture-upload"></span>
           <!-- Upload -->

views/partials/tool/pick-mobile.html

@@ -1,7 +1,7 @@
 <div id="pick-mobile" v-if="active_space" class="dialog-section" v-show="opened_dialog=='mobile'">
   <h4 class="dialog-title">Mobile Upload</h4>
 
-  <img v-if="active_space.edit_hash" v-bind:src="'/api/helper/qrcode/'+ active_space._id" />
+  <!--img v-if="active_space.edit_hash" v-bind:src="'/api/helper/qrcode/'+ active_space._id"-->
   
   <p class="text-center">
     Install the Spacedeck App on your phone and scan this QR code to upload photos, sound, video or text.

views/partials/tool/toolbar-elements.html

@@ -76,20 +76,7 @@
         {% include "./zones.html" %}
       </div>
     </div>
-
-    <div id="mobile-dialog" class="dropdown bottom light center static" v-bind:class="{open:opened_dialog=='mobile'}">
-      <div class="btn-collapse in">
-        <button class="btn btn-transparent btn-icon-labeled" v-bind:class="{open:opened_dialog=='mobile'}" v-on:click="open_dialog('mobile')" >
-          <span class="icon icon-device-mobile"></span>
-          <span class="icon-label">[[__("mobile")]]</span>
-        </button>
-      </div>
-
-      <div class="dialog mobile-search">
-        {% include "./pick-mobile.html" %}
-      </div>
-    </div>
-
+    
     <button class="btn btn-divider" v-show="logged_in"></button>
 
     <div class="dropdown bottom light center" v-show="logged_in" v-bind:class="{open:opened_dialog=='background'}">

views/partials/tool/zones.html

@@ -9,7 +9,7 @@
     <button v-on:click="add_zone()" class="btn btn-sm btn-primary">[[__("add_zone")]]</button>
   </div>
 
-  <div class="dialog-section no-p" v-for="z in zones | orderBy 'style.order'" style="white-space: nowrap;text-align:left;cursor:pointer" v-on:click="zoom_to_zone(z)">
+  <div class="dialog-section no-p" v-for="z in zones | orderBy 'order'" style="white-space: nowrap;text-align:left;cursor:pointer" v-on:click="zoom_to_zone(z)">
     <button class="btn btn-sm btn-transparent">{{{z.description}}}</button>
     <button v-if="$index==current_zone_idx" v-on:click="sort_zone_up(z)" class="btn btn-sm btn-round btn-transparent btn-icon"><span class="icon icon-triangle-up"></span></button>
     <button v-if="$index==current_zone_idx" v-on:click="sort_zone_down(z)" class="btn btn-sm btn-round btn-transparent btn-icon"><span class="icon icon-triangle-down"></span></button>