Renamed mod_covers to CoversInstallSupport, renamed files & includes
Changed include guards to #pragma once
Renamed base_app to UsiCore, renamed files to CamelCase, added pragmas
Renaming, fix linking and include

Renamed:
mod_css -> AutoStyleInstaller
mod_css_vars -> VariablesBasic

Fixed:
Library names linking
Incorrect include names in all modules
Update README.md
Create Code Conventions.md
Update Code Conventions.md
Added comments, organized includes
Refactoring at UsiCore root

Organized includes.

Removed:
AppWindow.addGeneralSettings()

Renamed:
app.authReqManager() -> httpManager()
ModuleInterface.preinit() -> initialize()
ModuleInterface.getMainController() -> getController()
Removed "m_" from member variables

Added:
SplashScreen.showStyledMessage to remove repeating arguments call
Adjustment on network & settings classes

- Added UsiException class to be base for all custom exceptions
- Merged isAvailable and isUnblocked into assertMalAvailable which
throws NetworkException
- removed "m_" prefix on members
- added comments
- restyled pointers
- QueryData is now a Map<QString,QString>

Renamed:
SettingsFormatJson -> JsonSettings
RequestManager -> HttpRequestManager
RequestManager.lastOperationAborted -> RequestManager.lastRequestAborted
SettingsManager.*DeleteOnExit -> SettingsManager.*Temporary
Fixed creeping bug that caused application crashes and network failures.

Internal QNetworkAccessManager got deleted in BlinkCore destructor.
Also a race condition was present in BlinkCore and BlinkXmlParser caused
by queued receiving of QNetworkReply, resulting in segfaults.
Also, application now synchronizes Blink retrieval at starting and
blocks input when before exit chores are being performed.
Marked UsiException as exported
Conventional changes for VariablesBasic
Refactored ListType from enum to class. Began refactoring ASI module
Fix: no current style set if no custom id available.
Style IDs are now retrieved from user profile. Fixed compile errors
Changed exceptions to catch by reference. Moved login code to try clause
Organized includes and private declarations
Fixed compile errors in SlidingStackedWidget
Reorganized common.pri