Feature/batch chapter download

[martinek]

There is lot of changes in this one. I had to do some cleanup to make room for chapter selection so keep with me please.

• Chapter components were moved to manga directory, since they are only used in manga screen.
• There is now a React way to render actions through portal into toolbar (see NavbarToolbar component). This is better then setting actions through useEffect as it automatically cleans up after itself and is much nicer to use.
• Code around using chapterOptions was moved into util.tsx and is now exposed through single useChapterOptions.
• Manga categories was changed

• ChapterOptions button was moved from Chapters list to manga toolbar.
• ChapterOptions were cleaned up. Mostly paddings and alignment was fixed. I have also changed rendering of Sort tab options to look cleaner and fixed missing keys.

• Refresh action and category edit action was moved to "More" menu of manga. While data is refreshing, small progress icon is shown in toolbar.

• ChapterCard layout was changed little bit.
• Date and download status are now on separate row so that they are in the same area on each item.
• Bookmark icon is now primary color and correctly aligned

• While download is running, progress bar is visible at the bottom of ChapterCard

• Chapter menu was cleaned up and icons were added to each action. Actions behave the same as before.

Finally changes that have to do with selection :)

• When "Select" action is clicked chapter is selected and UI changes to "selection mode"

While in selection mode

• Whole chapter card behaves like button for checkbox.
• User can select and deselect chapters.
• Floating action button at the bottom changes to "Selection FAB".
• Number of selected chapters is shown on the FAB.
• When all chapters are deselected, selection mode is canceled.
• There is button for Select All which adds all visible chapters to selection.
• There is button for Clearing the selection. This practically closes selection mode.
• Selection FAB currently has only single action "Download". This adds selected chapters to download queue.

[martinek]

Forgot to link to issues requesting this...

• [Feature Request] Multiple-select or select option for downloading chapters #123
• partially selecting multiple/bulk action for chapters #38

[AriaMoradi]

Another huge PR :/