Bug 998395 - [Tarako][email] OOM death/email killed from message scrolling with snippet fetching. r=asuth

Targeted uplift of the changes from bug 796474 that relate to block flushing.
Bug 999953 - Preload searchbar and make evme icons at correct position at soon as possible
Bug 995907 - create different entry point for sms-received system message
Merge pull request #18922 from dwi2/bug999953_v1.3t

Bug 999953 - Preload searchbar and make evme icons at correct position at soon as pos...
Revert "Merge pull request #18967 from leonazhao/bug992120_v1.3t"

This reverts commit aef737f4eae863949d4b42cd6c17339aec3a5fa0, reversing
changes made to 01b4910f2fb48b39686cab3e35166750a4d474ff.
Bug 995886 - [tarako] the two homescreens randomly overlapped with each other after wake up from sleep (workaround)
Merge pull request #18394 from mikehenrty/bug-995907-smsentry

Bug 995907 - create different entry point for sms-received system messag...
Revert "Merge pull request #18394 from mikehenrty/bug-995907-smsentry"

This reverts commit 128e558f0159c38d3ef60fc38d5a09910b62233e, reversing
changes made to 3e5af788dc532eadf4ce9fae2de9ac4fa76c930c.
Bug 1005624: Remove the hwc settings option on tarako r=fabrice
Bug 1006281 - [tarako]Camera app can't use internal storage when internal storage size is less than 5MB.
Bug 995907 - create different entry point for sms-received system message
Merge pull request #18996 from justindarc/bug1006281

Bug 1006281 - [tarako]Camera app can't use internal storage when interna...
Merge pull request #18999 from mikehenrty/bug-995907-smsentry

Bug 995907 smsentry
[Tarako][Email][LMK] Email attachment size limit logic bug results in too-large attachments being attached than detached rather than never detached. Results in email app getting killed. r=mcav. a=1.3T+

Conflicts:
	apps/email/js/cards/compose.js
Merge pull request #18875 from asutherland/v1.3t-reduce-block-mem

Bug 998395 - [Tarako][email] OOM death/email killed from message scrolling with snippet fetching. r=asuth. a=1.3T+
Merge pull request #19013 from asutherland/v1.3t-email-size-limit-fix

Bug 1006271 - [Tarako][Email][LMK] Email attachment size limit logic bug results in too-large attachments being attached than detached rather than never detached. Results in email app getting killed. r=mcav. a=1.3T+
Bug 1005787 : patch from jesse relaunch killed apps in cardview on tarako r=alive
Merge pull request #19015 from leonazhao/bug1005787_new_v1.3t

Bug1005787 patch from jesse relaunch killed apps in cardview on tarako r=alive
Revert "Bug 1005787 : patch from jesse relaunch killed apps in cardview on tarako r=alive"

This reverts commit 6a2d4f2b7ae9042bb18fc3e709eed4d529a5cb15.
Bug 1005787 : patch from jesse relaunch killed apps in cardview on tarako r=alive