software/theia: some "better" defaults

- exclude .pyc in files list
- exclude .env for virtualenv
- don't watch git (not sure it's really needed)
- use 2 spaces on editors
- use Vifib's plantuml service
- use Ctrl for multi cursor (for chromeos where alt is right click)

software/theia/software.cfg

@@ -89,7 +89,24 @@ template =
               "config": {
                   "applicationName": "Theia SlapOS",
                   "preferences": {
-                      "files.enableTrash": false
+                      "files.enableTrash": false,
+                      "files.exclude": {
+                          "**.pyc": true,
+                          "**.egg-info": true,
+                          "__pycache__": true,
+                          ".git": true,
+                          ".env": true
+                      },
+                      "files.watcherExclude": {
+                        "**/.eggs/**": true,
+                        "**/.env/**": true,
+                        "**/.git/**": true,
+                        "**/node_modules/**": true
+                      },
+                      "editor.multiCursorModifier": "ctrlCmd",
+                      "plantuml.webservice": "//plantuml.host.vifib.net/svg/",
+                      "plantuml.monochrome": false,
+                      "editor.tabSize": 2
                   }
               }
           }